358 CXXXVI. IRIDEZ (BAKER). | Acidanthera. 
11. ACIDANTHERA, Hochst.; Benth. et Hook, f. Gen. Pl. iii. 706. 
Perianth-tube usually long, cylindrical, slightly dilated upwards ; 
segments subequal, spreading, oblong or oblanceolate-oblong. Stamens 
unilateral, contiguous, inserted at or a little below the throat of the 
perianth-tube; filaments filiform ; anthers linear, with the connective 
sometimes produced a little beyond the cells. Ovary 3-celled ; ovules 
many, superposed ; style long, filiform; branches short, flattened in 
the upper half. Capsule oblong, membranous, loculicidally 3-valved. 
Seeds globose or discoid.—Rootstock a tunicated corm. Leaves linear, 
forming a distichous rosette. Flowers few, laxly spicate. Spathe- 
valves long, green, lanceolate. 
Species 18, the others all South African, 
Limb spotted with purple at the throat, 
Produced leaves 3—4. ` í ` > é . LL A, bicolor. 
Produced leaves many . : S ` S . 2, A. equinoctialis. 
Limb concolorous at the throat. 
Perianth-tube 2 in. long . k S f S . 3. A. gracilis. 
Perianth-tube 23-3 in. long. 
Perianth-segments oblanceolate, 4 in. long 4. A. unicolor. 
Perianth-segments oblong, 1 in, long 5. A. ukambanensis. 
Perianth-tube 3—4 in. long. 
Perianth-segments oblong 6. A. laxiflora. 
Perianth-segments ovate 7. A. candida, 
Perianth-tube 4-5 in. long 8. A. Gunnisi. 
1. A. bicolor, Hochst. in Flora, 1844, 25. Corm globose, 1 in. 
diam.; tunics brown, formed of matted fibres, reticulated upwards. 
Produced leaves 3—4 ; two basal, erect, linear, moderately firm, glabrous, 
}-1 ft. long, }-} in. broad. Stem simple, 1-1} ft. long, not angled, 
bearing 1-2 reduced leaves. Spike simple, very lax, 2—4-flowered ; 
outer spathe-valve lanceolate, green, herbaceous, 2—3 in. long. Perianth- 
tube slender, 4-5 in. long; segments oblong, acute, 1} in. long, the three 
lower with a large oblong dark purple spot at the base. Stamens 
nearly as long as the perianth-limb ; anthers linear, } in. long.—Bouché 
& Wittm. in Berlin. Monatsschr. xix. 12, t. 1 ; Baker, Handb. Trid. 188 ; 
Engl. Hochgebirgsfl. Trop. Afr. 175. Ixia quartiniana, A. Rich. Tent. 
Fl. Abyss. ii. 310. Spherospora gigantea, Klatt in Linnea, XXXIV. 699. 
Nile Land, Eritrea: Keren, 6500-7500 ft., Steudner,429. Abyssinia : Shire, 
Quartin-Dillon & Petit, 112! Sana ; plain of Mount Walcha, Schimper, 1634! and 
without precise locality, Schimper, 434! Somaliland: Daimoli Peak, 4000 ft. 
Aylmer ! 
Mozamb. Dist. British Central Africa: Shire Highlands, Buchanan, 5! 
2. A. equinoctialis, Baker in Journ. Linn. Soc. xvi. 160. Corm 
globose, 14 in. diam ; tunics of reticulated matted fibres. Stem erect, 
3-4 ft. long. Leaves many, superposed, ensiform, strongly veined, 
glabrous, 1-1} ft. long. Flowers 3-6 in a very lax simple distichous 
spike; outer spathe-valve lanceolate, foliaceous, 3-4 in. long m the 
