A revision of the genus Pteronia (Compositae). 293 



11. P. beckeoides, DC. Prodr. v. 359. 



A slender, twiggy shrub ; older twigs quite glabrous ; young twigs 

 and leaves minutely pulverulent, slender. Leaves opposite, linear, 

 subacute, 2 4 mm. long, 1 mm. wide, thickish, somewhat keeled, 

 entire, powdery. Heads terminal, solitary, sessile, oblong-turbinate, 

 conical at the base. 1*4-2 cm. long, glabrous. Involucral bracts in 

 many rows, ovate-lanceolate, acute or acuminate, with membranous 

 torn edges, the outer short. Achenes densely hairy. Pappus foxy. 



Distrib. — Swellendam, Drege. 



Known to us only from description. 



12. P. oppositifolia, Linn. Syst. 538. 



A small shrub. Branches densely puberulous. Leaves opposite, 

 ovate or ovate-lanceolate, subacute, broad at the base, 05-1 cm. 

 long, 2*5-5 mm. broad, rigidly chartaceous, flat, with a prominent 

 midrib below, densely puberulous on both surfaces. Heads terminal, 

 solitary, about 20-flowered, campanulate, 2 cm. long, about 125 cm. 

 in diameter. Involucral bracts 5-7-seriate, closely imbricate, gradually 

 increasing in size from below, the outer ovate-oblong, the inner oblong 

 or linear-oblong, rounded at the base, scarious with a darker patch on 

 the outside towards the apex, glabrous, shortly ciliate towards the apex. 

 Receptacle flat, with long setose, subulate bristles. Corolla 9-10 mm. 

 long, glabrous ; lobes linear-lanceolate, subobtuse, 25 mm. long. 

 Achenes 3 mm. long, villous with slender ascending white hairs, 

 abruptly contracted and glabrescent at the apex. Pappus reddish, as 

 long as the corolla-tube.— Thunb. Fl. Cap. ed Schult. 632 ; DC. Prodr. 

 v. 358 ; Harv. in Harv. & Sond. Fl. Cap. iii. 99. 



Distrib. — Worcester to MosselBay : Worcester; on hills at Touw's 

 River Eailway Station, 2500 ft., December, Bolus, 7438 ! Swellendam, 

 December, without collector's name in South African Museum 

 Herbarium ! Riversdale ; between Zoetemelks River and Little Vet 

 River, November, Burche/l, 6837! near Riversdale, November, 

 Schlechter, 1816 ! Mossel Bay ; Attaquas Kloof, November, Thunberg ! 



13. P. lucilioides, DC. Prodr. v. 358. 



A slender, much-branched, glaucous shrub ; young branches scabrid 

 puberulous, at length glabrous. Leaves opposite, free from each other 

 at the base, linear or subspathulate-linear, obtuse, 5-8 mm. long 

 about 1*25 mm. broad, very convex below, concave above, coriaceous 

 densely white scabrid-papillous on both surfaces. Heads terminal 

 solitary, sessile, acutely acuminate in the bud state, at length oblong- 



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