Pandiaka.| CVI, AMARANTACEE (BAKER AND CLARKE). 67 
18. PANDIAKA, Hook. f. in Benth. et Hook. f. Gen. Pl. iii. 35. 
Flowers perfect, solitary, each (without sterile flowers or rudi- 
mentary bracts) between two bracteoles, which are usually more than 
half the length of the flower and acute or spinescent. Perianth- 
segments oblong, acute or spinescent, } in. long or more, with straight 
white hairs on the back or glabrate. Filaments 5, linear to the basal 
tube, the interposed staminodes quadrate, truncate or fimbriate at the 
top; anther-cells 2, oblong. Ovary ovoid, obtuse or truncate, glabrous ; 
style linear ; stigma small, capitate; ovule 1, ona basalfunicle. Utricle 
oblong-obovoid ; seed ellipsoid, flattened; embryo curled.—Leaves 
opposite, sessile. Spikes dense, ovoid or cylindric. Perianth in fruit 
not reflexed rigidly against the rhachis, 
Species.—The 11 or 12 following confined to Tropical Africa. 
*Perianth-segments with many straight white hairs 
on the back. 
Heads short, ovoid. 
Floral leaves prominent; flowers ? in. long . 1. P, involucrata. 
Spikes not mixed with leaves. 
Flowers tin. long . ; a P . 2. P. ramulosa. 
Flowers 2in. long . : : . . 38. P. lanceolata, 
Heads cylindric, many twice as long as broad. 
Bracteoles with very long points, exceeding 
the perianth (leaves oblong-elliptic) . 4. P, cylindrica, 
Bracteoles shorter than, or hardly equalling 
the perianth. 
. P. Schweinfurthii. 
yellow 
. P. andongensis. 
Leaves oblong, wider upwards, subauricled . 
**Perianth-segments glabrous, or minutely pubes- 
cent on the back. 
Perianth-segments pale-brown, aristellate . - 10. P. oblanceolata. 
Perianth-segments white, subacute, muticous . 11. P. Carsoni. 
Leaves linear or scarcely linear-oblong . 5. P. Heudelotii. 
Leaves obovate. 
Staminodes notched ; plant erect, brown. 6. P. Welwitschii, 
Staminodes shortly hairy ; plant decum- 
bent, brown F ‘ s P . FT. P. debtlis. 
Staminodes long-fimbriate ; plant green- 
8 
9 
1. P. involucrata, Hook. f.in Benth. et Hook. f. Gen. Pl. iii, 36. 
A hairy erect branched herb, 3 ft. high. Leaves opposite, subsessile, 
13-24 in, long, ovate to elliptic-oblong. Spikes 4-} in. long and broad, 
3 to 6 approximated or crowded at the ends of the branches, white 
often apparently mixed with the green oblong floral leaves 4 in. long ; 
bracteoles similar to the perianth-segments, and very nearly as long. 
Perianth-segments 2 in. long, oblong-acute, with many long white hairs 
on the back. Staminodes quadrate, emarginate at the top. Ovary 
truncate.— Achyranthes involucrata, Mogquin in DC. Prodr. xiii. ii, 310; 
Benth. in Hook. Niger Fl. 492. 
