A revision of the genus Pteronia (Compositae). 309 



Graaff Eeinet ; 2700 ft., June, Bolus, 600 ! Jansenville ; Zwart 

 Euggens Range, 2000-3000 ft., August, Drege ! South Africa; with- 

 out pi*ecise locality, Arnott ! 



P. callosa, DC, which is unknown to us, may be the same as this 

 species. It was collected on the Zwart Euggens by Drege. 



33. P. tricephala, DC. Prodr. v. 359. 



A small branched shrub. Branches glabrous or very minutely 

 scaberulous, viscid. Leaves opposite, almost free from each other at 

 the base, linear-trigonous, acute and hooked pointed at the apex, 

 0'5-l - 2 cm. long, glabrous or slightly scabrous on the margin, viscid. 

 Heads 5-flowered, asually ternate, rarely solitary, narrowly obconic > 

 1"3-1*5 cm. long, about 5 mm. in diameter. Involucral bracts 6-7- 

 seriate, lanceolate, acute or subacute, distinctly keeled near the apex, 

 glabrous, with membranous margins, very finely ciliate. Receptacle 

 flat, honeycombed, hardly fimbriate. Corolla 8*5 mm. long, glabrous ; 

 lobes linear-oblong, subacute, 2 mm. long. Filaments inserted at the 

 base of the corolla tube, 7 mm. long, filiform ; anthers 35 mm. long, 

 linear, lanceolate and subacute at the apex. Style 9 - 5 mm. long, 

 terete; branches 4 mm. long, linear, acute. Achenes obovate-oblong, 

 25 mm. long, densely hairy. Pappus pale straw-coloured, a little 

 longer than the corolla. — Harv. in Harv. & Sond. Fl. Cap. iii. 101. 



Distrib. — Graaff Eeinet; Sneeuwbergen, 4500 ft., November, Bolus, 

 2038 ! Fraserburg ; Nieuweveld, Drege ! Wodehouse ; Stormberg, 

 December, Sim ! Middelburg ; Middelburg Eoad Railway Station, 

 November, 4000 ft., Flanagan, 1387 ! Orange Eiver Colony ; near 

 Boshof, October, McLea in Herb. Bolus, 5672 ! 



Section IV. GLABEATAE. 



34. P. heterocarpa, DC. Prodr. v. 364. 



Stems decumbent, rooting at the nodes, glabrous or very minutely 

 puberulous ; branches erect, up to 8 cm. long, terete, with smooth 

 reddish -brown bark. Leaves opposite, shortly connate at the base, 

 linear, obtuse, 3-3 - 5 cm. long, 2-3 mm. broad, fleshy, glabrous, densely 

 woolly-villous within the basal sheath. Heads 25-30-flowered, solitary, 

 terminal, broadly campanulate, l'5-2 cm. long, nearly 2 cm. in diameter. 

 Involucral bracts 3-4-seriate ; the outermost resembling the leaves and 

 scaly outside, oblong-lanceolate, rounded at the apex, about 7 mm. long, 

 with very broad membranous margins, gradually increasing in length 

 upwards ; the innermost about 1*5 cm. long and more or less of the 

 same shape as the outer ; all glabrous. Receptacle small and convex. 



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