Aloes and Lilies of Ethiopia and Eritrea

ZYGOTRITONIA GLADIOLUS 243
- Bracts 18–24(–30) mm, usually dull purple; dorsal tepal 12–18(–22) mm
12. G. schweinfurthii
6. Flowers fairly large, 55–95 mm long; perianth tube 30–45 mm long 7
- Flowers of moderate size, 25–45(–54) mm long; perianth tube 12–25(–30)
mm long 10
7. Lower tepals half to a third as long as dorsal 8
- Lower tepals about as long or not much shorter than dorsal 9
8. Flowers predominantly red; perianth tube comprising a slender lower part,
20–25 mm long, abruptly expanded into a wide horizontal cylindrical upper
part c. 15 mm long; dorsal tepal extended forward horizontally
10. G. longispathaceus
- Flowers orange, yellow or sometimes brownish; perianth tube not abruptly
expanded above into a wide cylindrical upper part, gradually expanding above
and narrowly and obliquely funnel-shaped; dorsal tepal hooded over stamens
and concealing them 6. G. dalenii
9. Plant with only 2–3 foliage leaves on stem; floral bracts 20–27(–35) mm long;
tepals uniformly pale 3. G. negelienesis
- Plant with (3–)4–5 foliage leaves; floral bracts (35–)40–60 mm long; tepals each
with a prominent central stripe 8. G. pauciflorus
10. Flowering stem lacking long-bladed foliage leaves, these produced on separate
shoots after flowering has begun; flowers white to pale pink 7. G. roseolus
- Flowering stem with foliage leaves present at flowering time; flowers with
various colours, including white and pale pink 11
11. Flowers 25–35 mm long 12
- Flowers 36–54 mm long 13
12. Perianth tube c. 12 mm long; bracts 20–25(–30) mm long; anther apices
obtuse, without appendages 5. G. calcicola
- Perianth tube c. 15 mm long; bracts 14–20(–25) mm long; anther apices
with short acute apiculate appendages 3. G. mensensis
13. Perianth tube about half as long as dorsal tepal, and c. 15 mm long
4. G. boranensis
- Perianth tube about as long as dorsal tepal and at least 16 mm long 14
14. Flower red or pink and with broad longitudinal cream or white nectar guides
on lower tepals; anthers with acute apiculate appendages c. 1 mm long
13. G. sudanicus
- Flower shades of white or pink, but then without longitudinal pale markings
on lower tepals; anthers without pale acute apiculate appendages 15