Hippeastrum Herbert 1821
Creators: name: Campos-Rocha, Antonio
name: Medeiros, Alexandre Da Silva
name: Meerow, Alan William
name: Sanz-Veiga, Priscila Andre
name: Koch, Ingrid
name: Dutilh, Julie Henriette Antoinette
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Amaryllidaceae
Hippeastrum

description: Identification key for the Hippeastrum species occurring in the Serra da Mantiqueira
1. Leaves pseudopetiolate to obscurely pseudopetiolate, lamina lanceolate to oblanceolate; ovary with up to 12 ovules per locule; interior of mature capsule bright red, seeds globose ................................................................. Hippeastrum reticulatum (Fig. 4J)
- Leaves sessile, lamina lorate, linear, falcate or strongly falcate; ovary with more than 24 ovules per locule; mature capsule not pigmented, seeds papery, flattened ................................................................................................................................................... 2
2. Lamina strongly falcate, subfleshy; flowers nearly actinomorphic, salverform; stamens erect, anthers at the same height .............. ................................................................................................................................................ Hippeastrum velloziiflorum (Fig. 4L)
- Lamina lorate, linear or falcate, chartaceous; flowers zygomorphic, campanulate to infundibuliform; stamens deflexed, anthers in different positions ............................................................................................................................................................................. 3
3. Lamina linear, 0.1–0.5 cm wide .................................................................................................. Hippeastrum cipoanum (Fig. 4D)
- Lamina lorate or falcate, more than 1 cm wide ................................................................................................................................ 4
4. Flowers green; staminal filaments exceeding the length of the perigone ................................ Hippeastrum calyptratum (Fig. 4C)
- Flowers white to cream, red, dark red to carmine, salmon, orange, sometimes greenish proximally and reddish distally, rarely pink; staminal filaments shorter than the perigone .................................................................................................................................... 5
5. Perigonal tube longer than 4 cm .............................................................................................. Hippeastrum brasilianum (Fig. 4B)
- Perigonal tube up to 4 cm long ......................................................................................................................................................... 6
6. Paraperigone absent .......................................................................................................................................................................... 7
- Paraperigone callose, fimbriate, a pellicle of fused fimbriae or a ring of broad scales...................................................................... 8
7. Flowers white with pink striations .................................................................................... Hippeastrum abatinguara (Figs. 1 & 2)
- Flowers red to orange .................................................................................................................... Hippeastrum striatum (Fig. 4K)
8. Stigma capitate to tri-lobed .............................................................................................................................................................. 9
- Stigma trifid .................................................................................................................................................................................... 10
9. Flowers salmon or orange, rarely pink, yellowish to green at the base, forming a circular pattern at the throat; upper tepals distally reflexed; perigonal tube 2.3–3.2 cm long .................................................................................... Hippeastrum puniceum (Fig. 4H)
- Flowers dark red to carmine, greenish white at the throat with extensions to the middle of the limb; upper tepals not reflexed; perigonal tube about 1 cm long ........................................................................................................ Hippeastrum reginae (Fig. 4I)
10. Paraperigone a ring of broad scales ................................................................................................ Hippeastrum aulicum (Fig. 4A)
- Paraperigone callose, fimbriate or a pellicle of fused fimbriae ...................................................................................................... 11
11. Tepals almost isodiametrical, lateral sepals symmetrically elliptic to narrowly elliptic .......... Hippeastrum morelianum (Fig. 4F)
- Upper sepal much wider and longer than lower petal, lateral sepals falcate .................................................................................. 12
12. Bulb subterranean; perigonal tube 1.4–2 cm long; paraperigone a pellicle of fused fimbriae ............................................................ ................................................................................................................................................... Hippeastrum glaucescens (Fig. 4E)
- Bulb on rocks; perigonal tube 2–2.4 cm long; paraperigone callose with faint linear scratches between the base of the expansions on the three upper tepals ........................................................................................................... Hippeastrum psittacinum (Fig. 4G)
description: Published as part of Campos-Rocha, Antonio, Medeiros, Alexandre Da Silva, Meerow, Alan William, Sanz-Veiga, Priscila Andre, Koch, Ingrid & Dutilh, Julie Henriette Antoinette, 2022, A remarkable new species of Hippeastrum (Amaryllidaceae) from the Serra da Mantiqueira, Southeastern Brazil, pp. 197-208 in Phytotaxa 571 (2) on pages 204-205, DOI: 10.11646/phytotaxa.571.2.6, http://zenodo.org/record/7284457