348 cxxxvi. iRiDE^ (baker). [Aristea, 



7. A. paniculata, Pax in Engl. Jahrh. xv. 151 {April 1892), not 

 of Baker {Aug. 1892). Leaves many in a basal rosette, firm, linear, J-1 

 ft. long, J- J in. broad. Peduncle flattened and distinctly winged, ^l 

 ft. long below the inflorescence, bearing a single reduced leaf. Inflores- 

 cence corymbose ; clusters of flowers 3-4 ; peduncles erecto-patent, 

 narrowly winged, 1-1 J in. long. Spathes oblong, J in. long ; outer 

 valves oblong, obtuse, with a firm centre and brown membranous edge. 

 Perianth J in. long. Capsule oblong, obtusely angled, subsessile, J in. 

 long.— yi. Lastii, Baker, Handb. Irid. 142 (Aug. 1892). 



XVIozamI). Dist. Portuguese East Africa : Mukua ; Namuli Hills, Last ! 



6. HESPERANTHA, Ker ; Benth. et Hook. f. Gen. PI. iii. 702. 



Perianth rotate; tube short, cylindrical; segments 6, subequal, 

 oblong, spreading. Stamens inserted at the throat of the perianth-tube, 

 e(iuilateral ; filaments filiform; anthers lanceolate, basifixed. Ovary 

 3-celled ; ovules many, superposed ; style not longer than the perianth- 

 tube, with 3 long subulate branches. Capsule small, turbinate, loculi- 

 cidally 3-valved. Seeds small, globose or angled by pressure. — Root- 

 stock a small tunicated corm, with a flat base. Leaves few, narrow, 

 distichous. Flowers in a distichous spike ; spathe-valves small, green, 

 generally not longer than the perianth-tube. 



Species 27, the others all South African. 



Perianth-segments as long as the tube. 



Anthers shorter than the filaments . . . . 1, H. alpina. 



Anthers longer tlian the filaments . . . . 2. jBT. petitiana. ' 



Perianth-segments longer than the tube . . . 3. -ff. Volkensii. 



1. H. alpina, Benth. <6 Hook. f. Gen. Plant, iii. 703. Corm very 

 small, globose. Produced leaves narrowly linear, sub-basal, firm, erect, 

 glabrous, 3-4 in. long, ^-J in. broad. Stems slender, simple, J-1 ft. 

 long, with a sheathing reduced leaf at the middle. Flowers 2-4 in a 

 lax spike ; outer spathe-valve lanceolate, gi-een, J-1 in. long. Perianth- 

 tube straight, erect, J- J in. long ; segments oblong, as long as the tube, 

 the inner white, the outer claret-red outside. Stamens shorter than 

 the perianth-segments; anthers oblong, shorter than the filaments. 

 Style-branches \ in. long. Capsule obovate-oblong, \-h in. long. — 

 Baker, Handb. Irid. 147; Engl. Hochgebirgsfl. Trop. Afr. 174. 

 Geissorhiza alpina, Hook. f. in Journ. Linn. Soc. vii. 223. 



Upper Guinea. Cameroons : on mountains at 8000-10,000 ft., Mann, 2134 ! 

 Johnston, 18 ! Preuss, 968 ! 



2. H. petitiana. Baker m Journ. Linn. Soc. xvi. 96. Corm small, 

 globose ; tunics rigid, dark brown. Produced leaves 2, suprabasal, 

 linear, flat, erect, moderately firm, glabrous, 6-9 in. long, J in. broad. 

 Peduncle slender, simple, 1 ft. long^ with 1 long-sheathing rudimentary 

 leaf. Flowers few in a lax spike ; outer spathe-valve oblong, obtuse, 



