Pteronia. | COMPOSIT ( Harv.) 109 
; This has quite the aspect of P. hirsuta B., but yellow flowers, kc. Leaves 3-4 
lines long, 1 line wide, somewhat channelled above, with prominent keel. Heads 
ae inch long, half an inch or more across. Achenes compressed, very sparingly 
pilose. 
47, P. stehelinoides (DC. 1. c. 364); much-branched, ramulous ; 
twigs scabrous-echinulate ; leaves opposite, sessile, linear or linear-ob- 
Jong, acute, rigid, keeled or infolded, rigidly ciliate on the margin (and 
sometimes on keel and upper surface), glaucous ; heads terminal, soli- 
tary, sessile, ovate-oblong, many-fl. ; inv.-scales at first powdery sca- 
berulous, then glabrous, appressed, broadly oblong, obtuse or mucronu- 
late, with a narrow, membranous and torn margin; achenes quite 
glabrous, not glandular. 
Var. B. stenocephala; fi.-heads narrower, with fewer flowers. (Hb. Sond.) 
Has. Graaf Reynet, EZ. Z./ Drege! Karroo, and Namaqualand, £.Z.! (Herb. 
Sond., D., Hk. 
A rigid, scrubby bush, with large fi.-heads. Leaves 4-5 lines long, 1 line wide. 
Heads an inch long, 4 inch in diameter. Scales dry. 
48. P. adenocarpa (Harv.); robust, much-branched ; twigs glabrous ; 
leaves opposite, sessile, obovate-oblong, subacute, recurved at point, 
spreading, thick, nerveless, rigidly ciliato-serrulate at the sub-reflexed 
margin, glabrous; heads terminal, solitary, oblong, many-fl. ; inv.-scales 
viscid, appressed, broadly oblong, very obtuse, opaque, entire, the edge 
scarcely sub-membranous ; achenes compressed, covered with raised 
glands, glabrous. PP. viscosa, DC. l.c. 364. 
Has. Winterhoek, £. Z.! Betw. Zwarteberg and Aasvogelberg, Drege! Somer- 
set, Mrs. F. W. Barber! (Herb. Sd., Hk., D.) 
A rigid shrub, 1-2 f. high, with flexuous branches and often opposite twigs. 
Leaves 4-6 lines long, 2-3 lines wide, scarcely connate at base, the younger balsamic. 
Heads an inch long, 4 inch wide. Pappus fulvous. Achenes obovate, with a 
marginal rib, glabrous, except a tuft of hairs at their base. Drege’s specimens 
marked P. viscosa “a,” belong to this ; those marked ‘‘b” to Pi. viscosa, Th. 
49. P. onobromoides (DC. Lc. 364); glabrous; leaves alternate, 
closely approximate, sessile, sub-lanceolate-linear, elongate, concave 
above, round-backed, rigidly ciliate at the margin; heads term., solitary, 
sessile, ovate (Jarge), many-flowered ; invol. scales oval-oblong, very 
obtuse, viscidulous, horny, appressed and quite entire; achenes glabrous, 
glandular. 
Has. Olifant’s R., Drege! Namaqualand, £.¢ Z.! Dr. Atherstone! Elandsberg, 
and towards Verloren Vlay and near S, Helena Bay, Dr. Wallich! Vogel-fontyn, 
Zey.! 816. (Herb. D., Hk., Sd.) 
2-3 feet high, the lower branches bare, rugose, the upper densely leafy. Lys. 14 
inch long, 2-3 lines wide, acute, rather rigid, somewhat involute when dry. Heads 
12-15 lines long, 10-12 1. wide. Pappus pale. ‘‘'The leaves are succulent and very 
aromatic, used by the native Namaquas and Bastards as a perfume, mixed with fat, 
under the name Buchu. It is called Sd) in the Namaqua language, and is dried and 
collected for sale.” Dr. Atherstone. 
50. P. scabra (Harv.); all parts closely rough with minute, harsh 
points ; leaves mostly alternate (the lowest sometimes opposite), linear, 
acute, sessile, thickish, flat, strongly-nerved, pale or glaucous; heads 
terminal, solitary, sessile, ovate or oblong; invol. multiseriate, loosely 
