106 & COMPOSIT2 (Harv.) ~ [Pteronia. 
on his own specimen they are alternate. The young leaves are bristly all over, the 
older more or less glabrate and ciliate: but very few remain on the only specimen 
I have seen, 
33. P. callosa (DC. 1. c. 362); “glabrous, much-branched ; leaves 
linear, thickish, subobtuse, very entire, not ciliate, indistinctly-nerved ; 
heads terminal, solitary, sessile, about 15-fl.; inv. oval-oblong, scales 
appressed, delicately and softly ciliate, obtuse and callous at the apex. 
DC. 
Has. Zwart-Ruggens, on the Karroo, Drege. ¢ $ 
“‘ Suffrutex, 6 inches high. Leaves 5-7 lines long, scarcely more than } line wide. 
Heads 9 lines long. Inv. pale-greenish, more intensely coloured at the tips of the 
seales. Cor. yellow. Achenes very villous, compressed, shortly beaked. Recept. 
nearly concave, areolate, shortly honeycombed.”—DC, Unknown tome. It seems 
to come very near the following. 
34, P. mucronata (DC. 1. c. 362); glabrous, much-branched ; leaves 
opposite, connate at base, crowded, linear, bluntly-keeled, fleshy, obtuse, 
rigidly-ciliolate; heads terminal, solitary, sessile, 12-1 5-fl.; invol. oval- 
oblong, somewhat viscid, scales appressed, horny-membranous, broadly 
oblong, with a sharp, often patent mucro, and lacerate-ciliate margin. 
Has. Zwart-Ruggens, on the Karroo, 2~3000 ft., Drege! Bitterfontyn, Zey./ 817. 
(Herb. D., Hk., Sd.) : es 
A scrubby, flexuous, small, intricately branched shrub. Leaves 3-8 lines long, 
4 line wide, sometimes scabrous at back. Heads 7-8 lines long, 3-4 lines wide. 
Fl. yellow. Achenes densely villous. 
35. P. turbinata (DC. 1. c. 362); glabrous, much-branched ; leaves 
sub-opposite, distinct at base, crowded, linear, thickish, rownd-backed, 
obtuse, quite entire, the upper smaller; heads terminal, solitary, sessile, 
about 15-fl.; invol. oval-oblong, slightly viscidulous, scales appressed, 
horny, oval-oblong, obtuse, silky-ciliate. 
Has. Little Namaqualand, Drege? (Herb. D., Hk., Sd.) 
A small, rigid scrub, intricately branched and flexuous. Leaves 4~s lines long, 
4 line wide, not strictly opposite, though very nearly so, very close-placed. Invol. 
scales rigid and opaque, pale. Our specimens from Drege do not quite accord with 
DC.’s description. 
36. P. lencoloma (DC. 1. c. 362); “glabrous; leaves opposite, sessile, 
orbicular or oval, very entire, 1-nerved ; heads terminal, solitary, ses- 
sile, many-fl.; invol. cylindrical, scales appressed, obtuse, with a white, 
very entire, scarious margin.” DC. 
Has. Kamiesherg, Drege. 
** Leaves 2-3 lines long, 2 lines wide, longer than the upper internodes. Heads 
10 lines long, 4~5 lines diameter. Achenes compressed, very hairy, with a short 
glabrous beak.”—-DC. Unknown to me. se 
37. P. cylindracea (DC. 1. c. 363); “glabrous; leaves opposite, 
crowded on the ramuli, spreading, lin,-trigonous, slightly hook-pointed, 
subobtuse ; heads terminal, solitary, sessile, cylindrical; inv. scales 
appressed, broadly ovate, with membranous, ciliate-lacerate margins, 
and mostly tipped with a callous mucro.” DO. 
Has. In the neighbourhood of the Gariep, Burchell, Cat. 1603. (fide DC.) 
