Ursinia Gaertner 1791
Creators: name: Magee, Anthony R.
name: Boatwright, James S.
name: Mucina, Ladislav
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Asterales
Asteraceae
Ursinia

description: 4. Key to the Namaqualand species of Ursinia
1. Paleae truncate, without rounded scale-like appendages; fruit straight or slightly curved with a uniseriate pappus of five broad scales ................................................................................................................................................................................................. 2
– Paleae with ovate to rotund scale-like appendages; fruit geniculate with a biseriate pappus composed of an outer series of broad scales and an inner series of setiform scales ......................................................................................................................................5
2. Woody perennials shrublets ...............................................................................................................................................................3
– Annual herbs ......................................................................................................................................................................................4
3. Stalked glands on leaves and stems; young leaves and involucral bracts white felty; paleae apices repand to slightly erosulate ..... ....................................................................................................................................................................................... U. glandulosa
– Stalked glands absent; leaves and involucral bracts glabrous to sparsely pilose; paleae apices prominently laciniate....................... .......................................................................................................................................................................................... U. laciniata
4. Pappus not exceeding corolla limb in fruit, paleae not exceeding the height of the florets after anthesis; rays orange on both surfaces, rarely yellow, often with purple or black spot at base.............................................................................. U. calenduliflora
– Pappus exceeding corolla limb in fruit, paleae extending far above the height of the florets after anthesis; rays whitish, yellow or apricot usually with a pinkish underside ................................................................................................................... U. anthemoides
5. Perennial subshrubs ........................................................................................................................................... U. chrysanthemoides
– Annual herbs.......................................................................................................................................................................................6
6. Involucral bracts cuspidate (including some of the innermost bracts) with purplish black apices; restricted to quartz patches ......... .......................................................................................................................................................................................... U. pygmaea
– Involucral bracts not cuspidate, margins and apices if marked then variously outlined purplish black ............................................7
7. Middle involucral bracts with acute to acuminate apices...................................................................................................................8
– Middle involucral bracts with obtuse apices ....................................................................................................................................10
8. Paleae appendages prominent, scale-like, firm, lustrous, brownish-yellow to brown-black, flat; margins clearly defined, somewhat thickened........................................................................................................................................................................ U. cakilefolia
– Paleae appendages inconspicuous, membraneous, transparent, somewhat undulate; margins not prominently thickened...............9
9. Inner paleae oblong with small ovate appendages; involucral bracts very broadly ovate with black crescent marks apically ........... ................................................................................................................................................................................................ U. nana
– Inner paleae lorate with elliptic appendages; outer involucral bracts outlined purplish black, inner bracts unmarked......... U. arida
10. Middle involucral bracts with transversely ovate, thin, transparent, yellowish-brown apical appendages ...................... U. speciosa
– Middle involucre bracts with ovate, thick, opaque, cloudy apical appendages ................................................... U. kamiesbergensis
description: Published as part of Magee, Anthony R., Boatwright, James S. & Mucina, Ladislav, 2014, Four new species of Ursinia (Asteraceae, Anthemideae) from South Africa, with an updated key to the genus in Namaqualand, pp. 137-145 in Phytotaxa 177 (3) on pages 140-141, DOI: 10.11646/phytotaxa.177.3.1, http://zenodo.org/record/5144648