Pteronia.| COMPOSITE (Hary.) 99 
Var. B. acerosa; heads 3~-5-flowered, mostly co bose ; iny.-scales narrow- 
oblong. Pt. acerosa, DC. l, c. 357. Vars. athe ‘dad t-dore, gsi 
Has. Districts of Uitenhage and Albany, common. (Herb. Th., Hk., D., Sd 
A much-branched, upright bush, 1~2 f. high ; branches closely leafy to the aie. 
mit. Leaves 4-7 lines long. Heads variable in size and number of flowers, and in 
the breadth and shape of the invol.-scales, even on the same branch! Vars. a. and 
8. therefore, are only casually distinct, 
4. P. uncinata (DC. 1. ¢. 357); glabrous; leaves 3 in a whorl, 
crowded, spreading, linear-trigonous with a hooked point, acute ; heads 
4-5-fl., corymbose, shortly pedicellate ; invol.-scales linear-oblong, sub- 
acute, entire, the inner ones longer, acute ; achenes topshaped, densely 
silky. P. verticiilata, DC. l.c.? 
Has. Lange Valei, Drege! Verloren Valei, among shrubs near the sea shore, 
Dr. Wallich }' (Herb. D., Hk., Sd.) 
Very similar in aspect and flowers to P. baccharoides, but differing in foliage. I 
do not see how DC.’s P. verticil/ata (by description) materially differs. Its A. are 
said to be purplish, those of the present sp. yellow. 
5. P. divaricata (Less. Syn. 196); branches divaricate ; twigs and 
leaves scabrous with a very minute, powdery and glandular pubescence; 
leaves opposite, elliptic or ovate, obtuse, shortly petioled; heads 5—6- 
fl., corymbose, pedicellate; invol.-scales glabrous, shorter than the dise, 
oval-oblong, obtuse, with membranous, entire margins ; ach. obovate, 
compressed, pilose. DC. l.¢. 357. Hupatorium divaricatum, Th.! Cap. 
628, Chrysocoma oppositifolia, Linn. 
Has. Cape, Burman. Groenekloof, 2. Z., Drege / Modderfontyn, Rev. H. White- 
head ! Namaqualand, A. Wyley/ Blauweberg, Zey./ 818. (Hb. Th., D., Hk., Sd.) 
A scrubby bush. Twigs opposite, horizontal or widely spreading. Lvs. 4-3 in. 
long, 3-5 lines wide, pale, t-nerved, sometimes mucronulate. Pedicels opposite, 
4-1 in. long. Pappus twice as long as the invol., reddish. 
6. P. inflexa (Thunb.! Cap. 633); twigs pubescent; leaves opposite, 
sessile, oval, oblong or oblongo-lanceolate, obtuse, thickish, faintly 
1-nerved, on both sides rigidly pubescent, or glabrescent ; heads termi- 
nal, sessile, solitary, oval, nearly glabrous; inv. equalling the disc, scales 
closely appressed, very broad and obtuse, roundish-oblong, convex, with 
a membranous, entire margin ; the lowest almost obovate. Burch. Cat. 
Geogr. 1495. P.lupulina, DC.! 1. ¢. 357. 
Has. Hantum, Thunb.! Sack Riv., Burchell. Nieuweveld, Drege! Bitterfontyn, 
Zey.! 3097. (Herb. Sd., Th.) 
A very rigid, robust, scrubby bush, 6-12 inches high, divaricately much-branched ; 
old twigs spinescent. Leaves variable in shape and pubescence, the smallest 1~2 
lines long, others 4-7 lines long and 1-21. broad. Heads 6-8 lines long, 4-5 1. in 
diam., on our specimens immature. 
7. P. oppositifolia (Linn. Syst. Veg. 614) ; twigs and leaves covered 
with a minute, powdery-scaberulous indument, cinereous ; leaves oppo- 
site, lanceolate-oblong, rather longer than the internodes, sessile, acute, 
strongly midribbed ; heads terminal, solitary, sessile, oval, many-fl. ; 
inv.-scales ovate, obtuse or subacute, appressed, rigid, glabrous, the 
inner subviscid, all minutely ciliolate. DC.l.c. 358. Th.! Cap. 632. 
Has, Cape, Thunberg! Burchell, Cat. 6837. (Herb. Thunb.) 
Y Seg 
