220 : PITTONIA. 
+ — Plants compactly tufted, the numerous branches pema ie 
nly from the base to the middle or near 
Herbage hirtellous in some part, or at least scaberulous (except in n. 100). 
Plants pale and glaucous 
Peduncles -e ; ay inch long, obovate, 
abruptly p 98 Æ. petrophila. 
TSn i a with Serer on calyx 
nch long, oblong-ovoid, taper-po 99 E. dumetorum. 
natio terete; calyx short, round-ovoid, very 
short-pointed 100 Z. Bakeri. 
Peduncles terete; calyx oblong-conical, slenderly 
taper-pointed 
Plants of a deeper green, glaucescent. 
Leaf-segments very narrow; calyx diaphanous, 
elliptic, with long slender point 102 Æ. tenuissima. 
Leaf-segments few and broad ; calyx opaque, elliptic- 
oblong, shortly taper-pointed................cssecesseess--00-- 103 E. Elmeri. 
Leaf-segments few and broad, calyx-ovoid, falcate- 
104 Æ. incisa. 
+ + + Plants more compact, appearing as if acaulescent; no leaves obvious 
except those of the basal tuft, the peduncles scapiform. 
Large plants with peduncles nearly afoot long ; 
1 H. caespitosa. 
as E. formosa, 
Peduncles 4-angled ; pods 4 inches long 6 E. dolichocarpa- 
Smaller plants; peduncles a few inches high, 4-angled aa in n, 112). 
Leaf-segments many, broad and short; herbage glaucous. 
Corolla cruciform, the petals fugacious; calyx small, 
labrous. 107 Æ. rhombipetala. 
Soroa Sion the petals deciduous; calyx anen 
08 Æ. Lemmoni. 
eon a few very long and narrow; lage 
green; peduncles 4-angled ; 
eaf-segments lance-linear; calyx ovate-conic, 
scarcely pointed 109 Æ. Lobbii. 
Leaf-segments narrowly linear; calyx ovate, 
abruptly taper-pointed 110 Æ. pulchella. 
Leaf-segments acerose; calyx elliptic, pointless...111 Æ. unguiculata. 
Leaf-segments many, linear, obtuse ; herbage glaucous, _ 
subsucculent ; peduncles t 112 E. glyptosperma. 
