OpenLLM-France/wikimedia huggingface dataset:
# Drones/Mapping

Drones equipped with a camera can be flying a track to cover a certain area with images.
* (2D) The collected images can be concatenated in a twodimensional space to create a single image of the covered area.
* (3D) with a collected images and the application of Photogrammetry a 3D map of the covered area can be generated.

## Learning Task

* (Photogrammetry) Analyse the methodology of Photogrammetry and explain how 3D map can be generated from a set of twodimensional images!
* (Comparision with Remote Sensing with Satellites) Explain how drone mapping and satellite images can be used for mapping. Compare these approaches and describe the PROs and CONs of the technology!
* Analyse the Open Source Software OpenDroneMap and describe the basic components that are required for generation of a 3D point cloud.
* (360 Degree Images) Analyse the Open Source Software Hugin that is able to create a 360 degree panorama image from a set of snapshots with an ordinary camera. What are similarities and differences between those approaches?
* Compare the application of blimps (see image) with drones for the mapping of a specific area. What are PROs and CONS of both technologies?
* (Delivery of Goods) Drones can be used to delivery of goods e.g. in emergency cases! What are the benefits and challenges to combine two objectives into one drone? (e.g. for planning the upcoming support and response activities in a disaster management cycle?
* (Other Camera Types on Drones) Remote Sensing on satellites can also other camera like use x-Ray cameras for rain radar. Assume you equip a drone with an infrared camera. What can be detected during night with those images? Can animals in their habitat be detected with infrared cameras on drones. Explain how the technology works!

## Remark

This learning resource follows the Open Community Approach and applies Open Source software for performing the learning tasks.
# Drum set/What's in a drum set?

Drum set→ What's in a drum set?
This page is part of the Drum set project. :
You've probably heard the term 'drum set' or 'drum kit' before but have you actually given much thought as to what is actually in one? In this lesson, we're going to try and introduce you to what is in a basic drum set; what it looks like, what it sounds like etc. We'll be going through each indivudual part of the drum kit in detail; cymbals and drums. The diagram to the right shows the parts of a standard, 5-piece drum set (5-piece referring to the number of drums - cymbals aren't counted here). Throughout this lesson, we'll be referring back to it so that you can see where everything goes.

## Cymbals

| "Crash cymbal" (0:05) Sample of a "Crash cymbal" Problems playing this file? See media help. | A Crash cymbal is a medium sized cymbal often placed to the left of the drum set for a right-handed drummer (see #8 on the diagram at the top of the page) since the Ride cymbal is usually on the right although some drummers position it elswhere. The noise it produces is simulated to the left. Usually the Crash cymbal will be the first to warp and ultimately crack due to the repeated striking of its edge. As I've just said the Crash cymbal is played by hitting it on the edge. | This is a 16 inch Zildjian A custom Projection Crash. |
| A Ride cymbal is a large cymbal often stationed to the right of the drum kit, for right-handed drummers (see #7 on the diagram at the top of the page). It's purpose is similar tot hat of a Hi-hat in that it is used to maintain a steady rythmic pattern. It can be played in three ways by hitting three different parts, which are simulated to the right. | A hit on the bow. (0:06) Sample of a "Ride cymbal being hit on the bow. Problems playing this file? See media help. A hit on the bell. (0:06) Sample of a "Ride cymbal being hit on the bell. Problems playing this file? See media help. A hit on the rim. (0:06) Sample of a "Ride cymbal being hit on the rim. Problems playing this file? See media help. |
* A Splash cymbal is the smallest cymbal that can be positioned in several ways. It generally does not have an individual stand but rather 'piggybacks' on another stand or cymbal, as in the second image on the left. I can also be put on upside down (as on the left) or the right way up (see the first picture on the left. It is used for an accent, for instance at the end of a bar (more on that later in basic beats). Most splash cymbals range from 6" to 12" in diamater (the first image on the left is 10").

## Drums

| Bass drum (0:05) Sample of an unmuffled Bass drum from a Drum kit Problems playing this file? See media help. | A bass drum (also known as the kick drum) is the large drum in the center of the drum kit (see #1 on the digram at the top of the page). It is not played with sticks but rather with a beater attached to a pedal (see the second image on the right) which a right handed drummer operates with the right foot. It is generally used to play the '1' and '3' beats in a 4/4 rythym. Sometimes are played at once (see the image on the left) where a second pedal is positioned next to the hi-hats pedal. |
# BCP/Gardenia

Gardenia
| Gardenia jasminoides, flower Wikipedia • Commons • Wikibooks (horticulture) • Wikibooks (subject) • Wikispecies • Fruit and seed clock | Profile for Gardenia (Gardenia) Identifying Characteristics Habit:ShrubFlowers:SimpleFoliage:Glossy, simple, sessileScent:Very fragrant, sweetGrowing Conditions:Shade, part sunLife Cycle: PerennialGeneral information:Famous for its extraordinary fragrance similar to plumeria Recent Logs --Clarinetguy097 (discuss • contribs) 02:27, 8 June 2020 (UTC) --Clarinetguy097 (discuss • contribs) 14:00, 26 June 2020 (UTC) --Clarinetguy097 (discuss • contribs) 01:46, 8 July 2020 (UTC) (view all logs) |
Global data:
Regional data:
Additional images:
# BCP/Geranium/Logs

This page contains recent bloom logs for Geranium (True Geraniums). If you saw this plant blooming today (or sometime within the last 3 days), you can help improve the bloom clock by logging it. Just click on "edit" next to the Recent Logs heading, add *~~~~ (an asterisk followed by four tildes) on a new line just below the last signature, and then click "save page". This will add your signature and the date to log the plant.
Please make sure you've signed up on the contributors' page so that we can know the location of the plant you saw blooming and use your contribution to create a flora for your region! When you're done, you can go back to one of the main pages and find logs of other flowers you might have seen today.

### Logs
#### 2007 Logs

* SBJ May 29 2007 (from photographs)
* SB Johnny-LM 09:37, 9 June 2007 (UTC)
* --SB_Johnny | 14:34, 9 June 2007 (UTC)
* --SB_Johnny | 13:36, 23 June 2007 (UTC)
* --SB_Johnny | 10:45, 4 July 2007 (UTC)
* --SB_Johnny | 11:07, 24 July 2007 (UTC)
* --SB_Johnny | 12:04, 17 September 2007 (UTC)

#### 2008 Logs

* (no archived logs yet)

##### Recent Logs

* SB Johnny-LM 11:53, 30 April 2008 (UTC)
* --SB_Johnny | 09:51, 27 May 2008 (UTC)
* Anna reg, 1 May 2010 (Photo, cultivar)
* Anna reg 13:02, 4 June 2010 (UTC)
# BCP/Geranium maculatum

Geranium maculatum
| Plant in bloom Wikipedia • Commons • Wikibooks (horticulture) • Wikibooks (subject) • Wikispecies • Fruit and seed clock | Profile for Geranium maculatum (Blue Wood Geranium) Identifying Characteristics Recent Logs --SB_Johnny | 9 May 2007 (from photographs) --SB_Johnny | 00:32, 24 May 2007 (UTC) --SB_Johnny | 10:21, 26 May 2007 (UTC)* --SB_Johnny | 12:04, 26 April 2008 (UTC) --SB_Johnny | 13:57, 27 May 2008 (UTC) (still in full bloom, forgot to log earlier this month) --SB_Johnny | 08:58, 2 June 2008 (UTC) (view all logs) |
Global data: Temperate zone season(s): Mid Spring, Late Spring, Early Summer
Regional data: Southeastern Pennsylvania: (native) April, May, June
Additional images:
# BCP/Gaultheria procumbens

Gaultheria procumbens
| Gaultheria procumbens in flower Wikipedia • Commons • Wikibooks (horticulture) • Wikibooks (subject) • Wikispecies • Fruit and seed clock | Profile for Gaultheria procumbens (Eastern Teaberry, Checkerberry, Boxberry and American Wintergreen) Identifying Characteristics Habit:Erect/creepingFlowers:Bell-shaped, 6–8 mm long, white, borne solitary or in short racemes.Foliage:Elliptic to ovate, 2–5 cm long and 1–2 cm broadStem:Round, 10–15 cm tallScent:Distinct oil of wintergreen scent.Growing Conditions:Dry to moist acidic soils; forests; sandy areasFruit:Edible berry 8–15 mm in diameter persists through the winter until new blossoms form.Life Cycle: Perennial Recent Logs Jomegat 23:33, 2 July 2010 (UTC) (view all logs) |
Global data: Temperate zone season(s): Mid Summer, Late Summer
Regional data: Southeastern Pennsylvania: (cultivated) September New Hampshire: July, August , September
Additional images:
# BCP/Geranium macrorrhizum

Geranium macrorrhizum
| Wikipedia • Commons • Wikibooks (horticulture) • Wikibooks (subject) • Wikispecies • Fruit and seed clock | Profile for Geranium macrorrhizum (Geranium) Identifying Characteristics Recent Logs (no logs yet) (view all logs) |
Global data: Temperate zone season(s): Late Spring
Regional data: Southeastern Pennsylvania: (cultivated) May
Additional images:
# BCP/Geranium macrorrhizum/Logs

This page contains recent bloom logs for Geranium macrorrhizum (Geranium). If you saw this plant blooming today (or sometime within the last 3 days), you can help improve the bloom clock by logging it. Just click on "edit" next to the Recent Logs heading, add *~~~~ (an asterisk followed by four tildes) on a new line just below the last signature, and then click "save page". This will add your signature and the date to log the plant.
Please make sure you've signed up on the contributors' page so that we can know the location of the plant you saw blooming and use your contribution to create a flora for your region! When you're done, you can go back to one of the main pages and find logs of other flowers you might have seen today.

### Logs
#### 2008 Logs

* (no archived logs yet)

##### Recent Logs

* (no logs yet)
# BCP/Gardenia/Logs

This page contains recent bloom logs for the plant Gardenia (Gardenia). If you saw this plant blooming today (or sometime within the last 3 days), you can help improve the bloom clock by logging it. Just click on "edit" next to the Recent Logs heading, add *~~~~ (an asterisk followed by four tildes) on a new line just below the last signature, and then click "save page". This will add your signature and the date to log the plant.
Please make sure you've signed up on the contributors' page so that we can know the location of the plant you saw blooming and use your contribution to create a flora for your region! When you're done, you can go back to one of the main pages and find logs of other flowers you might have seen today.

##### Archived Logs

(If there are more than 5 signatures under the recent logs heading, move the oldest logs to under this heading (generally leave the 3 most recent).
* (no archived logs yet)

##### Recent Logs

* --Clarinetguy097 (discuss • contribs) 02:27, 8 June 2020 (UTC)
* --Clarinetguy097 (discuss • contribs) 14:00, 26 June 2020 (UTC)
* --Clarinetguy097 (discuss • contribs) 01:46, 8 July 2020 (UTC)
# BCP/Gaultheria procumbens/Logs

This page contains recent bloom logs for Gaultheria procumbens (Wintergreen). If you saw this plant blooming today (or sometime within the last 3 days), you can help improve the bloom clock by logging it. Just click on "edit" next to the Recent Logs heading, add *~~~~ (an asterisk followed by four tildes) on a new line just below the last signature, and then click "save page". This will add your signature and the date to log the plant.
Please make sure you've signed up on the contributors' page so that we can know the location of the plant you saw blooming and use your contribution to create a flora for your region! When you're done, you can go back to one of the main pages and find logs of other flowers you might have seen today.

### Logs
#### 2007 Logs

* --Jomegat 15:54, 29 July 2007 (UTC)
* --Jomegat 00:39, 10 August 2007 (UTC)
* --SB_Johnny | 00:06, 22 September 2007 (UTC)

#### 2008 Logs

* Jomegat 18:43, 6 July 2008 (UTC)
* Jomegat 03:02, 13 July 2008 (UTC)
* Jomegat 01:03, 20 July 2008 (UTC)
* Jomegat 01:22, 26 July 2008 (UTC)
* Jomegat 01:22, 2 August 2008 (UTC)
* Jomegat 22:49, 6 August 2008 (UTC)
* Jomegat 20:39, 9 August 2008 (UTC)
* Jomegat 03:48, 12 August 2008 (UTC)
* Jomegat 21:41, 1 September 2008 (UTC) (big surprise to find one of these now)

#### 2009

* Jomegat 00:49, 15 July 2009 (UTC) Probably bloomed a 7-10 days ago, but I was out of town.
* Jomegat 15:48, 26 July 2009 (UTC)

##### Recent Logs

* Jomegat 23:33, 2 July 2010 (UTC)
# BCP/Geranium

Geranium
| Flowers of Geranium x magnificum Wikipedia • Commons • Wikibooks (horticulture) • Wikibooks (subject) • Wikispecies • Fruit and seed clock | Profile for Geranium (True Geraniums) Identifying Characteristics Flowers:5 petalsFoliage:palmately veinedSubclass plants:G. macrorrhizum G. maculatum G. phaeum G. pratense G. pyrenaicum G.robertianum G. x cantabrigiense 'Biokovo' Recent Logs SB Johnny-LM 11:53, 30 April 2008 (UTC) --SB_Johnny | 09:51, 27 May 2008 (UTC) Anna reg, 1 May 2010 (Photo, cultivar) Anna reg 13:02, 4 June 2010 (UTC) (view all logs) |
Global data: Temperate zone season(s): Mid Spring, Late Spring, Early Summer, Mid Summer
Regional data: Southeastern Pennsylvania: April, May, June, July
Additional images:
# BCP/Geranium maculatum/Logs

This page contains recent bloom logs for Geranium maculatum (Blue Wood Geranium). If you saw this plant blooming today (or sometime within the last 3 days), you can help improve the bloom clock by logging it. Just click on "edit" next to the Recent Logs heading, add *~~~~ (an asterisk followed by four tildes) on a new line just below the last signature, and then click "save page". This will add your signature and the date to log the plant.
Please make sure you've signed up on the contributors' page so that we can know the location of the plant you saw blooming and use your contribution to create a flora for your region! When you're done, you can go back to one of the main pages and find logs of other flowers you might have seen today.

### Logs
#### 2008 Logs

* (no archived logs yet)

##### Recent Logs

* --SB_Johnny | 9 May 2007 (from photographs)
* --SB_Johnny | 00:32, 24 May 2007 (UTC)
* --SB_Johnny | 10:21, 26 May 2007 (UTC)*
* --SB_Johnny | 12:04, 26 April 2008 (UTC)
* --SB_Johnny | 13:57, 27 May 2008 (UTC) (still in full bloom, forgot to log earlier this month)
* --SB_Johnny | 08:58, 2 June 2008 (UTC)
# Bloom Clock/Vines, trees, and shrubs with pink flowers seen in September in Southeastern Pennsylvania/DPL

This page is used to help create a graphical list.
* BCP/Hibiscus moscheutos
* BCP/Angelonia angustifolia
* BCP/Hibiscus trionum
* BCP/Oenothera speciosa
* BCP/Rosa 'Pink Knockout'
* BCP/Geranium sanguineum
* BCP/Echinacea purpurea
* BCP/Clematis
* BCP/Clethra alnifolia
* BCP/Lonicera sempervirens
* BCP/Buddleja davidii
* BCP/Anagallis arvensis
* BCP/Polygonum sagittatum
* BCP/Salvia nemorosa
* BCP/Salvia vanhouttei
* BCP/Albizia julibrissin
* BCP/Phlox paniculata
* BCP/Impatiens walleriana
* BCP/Petunia x hybrida
* BCP/Lythrum salicaria
* BCP/Torenia fournieri
* BCP/Zinnia violacea
* BCP/Lathyrus odoratus
* BCP/Persicaria maculosa
* BCP/Cleome hassleriana
* BCP/Platycodon grandiflorus
* BCP/Sedum spectabile
* BCP/Lonicera x heckrottii
* BCP/Hibiscus syriacus
* BCP/Anemone x hybrida
* BCP/Sedum spurium
* BCP/Salvia involucrata
* BCP/Rosa 'Knockout'
* BCP/Hesperis matronalis
* BCP/Vinca minor
* BCP/Saponaria officinalis
* BCP/Aster novae-angliae
* BCP/Trifolium repens
* BCP/Trifolium pratense
* BCP/Viola tricolor
* BCP/Viola x wittrockiana
* BCP/Securigera varia
* BCP/Achillea sibirica
* BCP/Dianthus armeria
* BCP/Hemerocallis
* BCP/Lagerstroemia indica
* BCP/Begonia grandis
* BCP/Dahlia
* BCP/Gaultheria procumbens
* BCP/Polygonum pensylvanicum
* BCP/Prunus
* BCP/Viola
* BCP/Dianthus
* BCP/Malva neglecta
# Bloom Clock/Welcome

Welcome to the Bloom Clock, Wikiversity's oldest research project! The Bloom Clock serves 3 related functions:
* Developing a database of when plants bloom in any given geographical region.
* Helping to teach users about plants, by allowing them to visually identify flowers they saw blooming on a given day
* Serving as an organizing point for the improvement of wikimedia content (Wikipedia articles, Wiktionary definitions, Commons galleries, Wikibooks chapters, etc.)

## How to participate

There are a number of ways to participate, appropriate for all knowledge levels regarding both plants and the use of wikis.
* Users with little knowledge about plants (or even users who know a lot about them, but don't know every plant) can browse by color, form, and season using the Keys. If the plant you saw isn't on the appropriate list (and you have a photo), try using the Unknown plants page.
* Users with a solid knowledge of plants can help identify images on the Unknown plants page, and log plants they've seen blooming either on the Log pages or the text list for the current clock run.
* Users with wiki-editing skills can help create Log pages and keep the Keys up-to-date.
# Bloom clock project/2007 data

This page will list data from the 2007 clocks. To record a plant in bloom, go to the current clock and follow the directions at the top of the page!
# Bloom clock project/2007 part one (unknown)

This part of the bloom clock is for unknown plants, whether this means that a contributor only knows the common name of a plant, the genus but not the species, or even completely unknown plants (a photograph or good description would be helpful for those!). Hopefully someone will be able to identify them in the future.

## Genus only

(Use this section for entries by genus. Genus entries will not be as useful for the data collection, but they're interesting nonetheless).
Crocus (Crocus) Wikipedia | Commons | Wikibooks | Quiz page
* SB Johnny-LM 13:30, 31 March 2007 (UTC)
Narcissus (Daffodil) Wikipedia | Commons | Wikibooks | Quiz page
* SB Johnny-LM 13:30, 31 March 2007 (UTC)
Tulipa (Tulip) Wikipedia | Commons | Wikibooks | Quiz page
* SB Johnny-LM 13:30, 31 March 2007 (UTC)
# Bloom Clock/Vines with white flowers seen in September in Southeastern Pennsylvania

The plants pictured below have been recorded as blooming during the month of September in Southeastern Pennsylvania.
Lonicera japonica
| Flowers and foliage Wikipedia • Commons • Wikibooks (horticulture) • Wikibooks (subject) • Wikispecies • Fruit and seed clock | Profile for Lonicera japonica (Japanese Honeysuckle) Identifying Characteristics Habit:Twining vineFlowers:In terminal clusters, tubular, white or yellow (both colors often appearing on the same plant)Foliage:Simple, oppositeScent:Flowers are sweetly scentedLife Cycle: Woody perennial Recent Logs Duiarmia 20:47, 27 May 2008 (UTC) --SB_Johnny | 10:56, 8 June 2008 (UTC) --SB_Johnny | 10:00, 14 July 2008 (UTC) (view all logs) |
Global data: Temperate zone season(s): Early Summer, Mid Summer, Late Summer, Early Fall, Mid Fall, Late Fall
Polygonum arifolium
| Plant in flower Wikipedia • Commons • Wikibooks (horticulture) • Wikibooks (subject) • Wikispecies • Fruit and seed clock | Profile for Polygonum arifolium (Halberd-leaved tearthumb) Identifying Characteristics Habit:Rambling vineStem:Covered in short barbsLife Cycle: Annual Recent Logs --SB_Johnny | 10:21, 12 August 2007 (UTC) --SB_Johnny | 10:17, 31 August 2007 (UTC) --SB_Johnny | 10:34, 1 September 2007 (UTC) --SB_Johnny | 07:04, 27 September 2007 (UTC) --SB_Johnny | 10:53, 29 July 2008 (UTC) (view all logs) |
Global data:
Polygonum sagittatum
| Inflorescences Wikipedia • Commons • Wikibooks (horticulture) • Wikibooks (subject) • Wikispecies • Fruit and seed clock | Profile for Polygonum sagittatum (Arrowleaf tearthumb) Identifying Characteristics Recent Logs --SB_Johnny | 11:51, 4 August 2007 (UTC) --Jomegat 00:07, 15 August 2007 (UTC) --SB_Johnny | 10:12, 31 August 2007 (UTC) --SB_Johnny | 10:31, 1 September 2007 (UTC) --SB_Johnny | 07:43, 2 October 2007 (UTC) (view all logs) |
Global data:
Clematis virginiana
| Inflorescences Wikipedia • Commons • Wikibooks (horticulture) • Wikibooks (subject) • Wikispecies • Fruit and seed clock | Profile for Clematis virginiana (Virgin's Bower, Devil's Darning Needle) Identifying Characteristics Habit:Climbing vineFlowers:White, with 5 petals and many showy anthersFoliage:TrifoliateGrowing Conditions:Widely adaptableLife Cycle: Perennial Recent Logs --SB_Johnny | 14:59, 19 August 2006 (UTC) --SB_Johnny | 12:23, 28 August 2006 (UTC) --SB_Johnny | 09:47, 12 July 2007 (UTC) --SB_Johnny | 09:42, 3 August 2007 (UTC) --SB_Johnny | 10:04, 1 September 2007 (UTC) (view all logs) |
Global data:
# Bloom clock project/2007 part one archive

This is the archive list for Bloom clock project/2007 part one. Plant listings which have not been recorded blooming for over one month are moved here. The bloom times are moved to the log pages (follow the "log page" link to see the full set of data for any particular plant).

### C-D

Cardamine hirsuta (Hairy wintercress) Wikipedia | Commons | Wikibooks | Quiz page | Log page
Cercis canadensis (Eastern Redbud) Wikipedia | Commons | Wikibooks | Quiz page | Log page
Chionodoxa (Chionodoxa) Wikipedia | Commons | Wikibooks | Quiz page | Log page
Citrus sinensis (Sweet Orange) Wikipedia | Commons | Wikibooks | Quiz page | Log page
Claytonia virginica (Spring Beauty) Wikipedia | Commons | Wikibooks | Quiz page | Log page
Cornus florida (Flowering Dogwood) Wikipedia | Commons | Wikibooks | Quiz page | Log page
Cornus mas (Cornelian cherry) Wikipedia | Commons | Wikibooks | Quiz page | Log page
Corylopsis spicata (Winter Hazel) Wikipedia | Commons | Wikibooks | Quiz page | Log page
Crocus vernus (Crocus) Wikipedia | Commons | Wikibooks | Quiz page | Log page

### E-F

Erythronium americanum (Trout Lily) Wikipedia | Commons | Wikibooks | Quiz page | Log page (Archived)
Forsythia x intermedia (Garden Forsythia) Wikipedia | Commons | Wikibooks | Quiz page | Log page

### G-H

Galanthus nivalis (Common Snowdrop) Wikipedia | Commons | Wikibooks | Quiz page | Log page (archived)
Hamamelis x intermedia (Hybrid Witch Hazel) Wikipedia | Commons | Wikibooks | Quiz page | Log page (Archived)
Helleborus foetidus (Stinking Hellebore) Wikipedia | Commons | Wikibooks | Quiz page | Log page
Helleborus x hybridus (Hybrid Hellebore) Wikipedia | Commons | Wikibooks | Quiz page | Log page
Helleborus niger (Christmas Rose) Wikipedia | Commons | Wikibooks | Quiz page | Log page
Hyacinthoides non-scripta (Bluebell) Wikipedia | Commons | Wikibooks | Quiz page | Log page

### M-N

Magnolia x soulangeana (Saucer Magnolia) Wikipedia | Commons | Wikibooks | Quiz page | Log page
Magnolia stellata (Star Magnolia) Wikipedia | Commons | Wikibooks | Quiz page | Log page
Malus (Crabapple) Wikipedia | Commons | Wikibooks | Quiz page | Log page
* SBJ 12:05, 12 May 2007 (UTC)
Malus domestica (Apple) Wikipedia | Commons | Wikibooks | Quiz page | Log page
Narcissus sp (Daffodil) Wikipedia | Commons | Wikibooks | Quiz page | Log page
* SortaQuiet 03:48, 17 June 2007 (UTC)

### O-P

Pieris japonica (Japanese Andromeda) Wikipedia | Commons | Wikibooks | Quiz page | Log page
Prunus persica (Peach) Wikipedia | Commons | Wikibooks | Quiz page | Log page
Prunus 'Okame' (Okame Cherry) Wikipedia | Commons | Wikibooks | Quiz page | Log page

### U-V

Vinca minor (Periwinkle) Wikipedia | Commons | Wikibooks | Quiz page | Log page