A revision of the genus Pteronia {Compositae) . 315 



Receptacle flat, honeycombed, the walls of the cells fimbriated. 

 Involucral bracts 6 8- seriate, linear- lanceolate to lanceolate, long- 

 acuminate, very acute, glabrous, keeled, with membranous margins. 

 Corolla 5"5 mm. long, tubular ; lobes unequal, triangular-lanceolate, 

 subacute, about 1 mm. long. Stamens inserted at the base of the 

 corolla ; filaments 2"5 mm. long, linear. Anthers 2'5 mm. long, linear, 

 lanceolate and acute at the apex. Style 5 mm. long, terete, narrowed 

 at the base ; style-branches 1 mm. long, linear, acute, papillose. 

 Achenes 2 mm. long, densely villous. Pappus 6 mm. long. — Hai*v. 

 in Harv. & Sond. Fl. Cap. iii. 105. 



Distrib. — Bushmanland ; Bitterfontein, Zeyher, 811. 



43. P. acuminata, DC. Prodr. v. 361. 



A small shrub, branches grey, terete, glabrous. Leaves alternate 

 or very rarely nearly opposite, oblanceolate, slightly mucronate, 1-2 cm. 

 long, 5-8 cm. broad, flat, entire, coriaceous-fleshy, glabrous, 1-nerved. 

 Heads solitary, terminal, pedunculate, turbinate when young and rather 

 acute, tubular when open, 2 - 5 cm. long. Involucral bracts gradually 

 increasing in length upwards ; the outermost lanceolate, about 4 mm. 

 long and 2 mm. broad ; the innermost linear or linear-lanceolate, 2 cm. 

 long ; all very acutely acuminate, 1-nerved, thin, with membranous 

 margins, and very shortly puberulous outside. Receptacle slightly 

 convex, 4 mm. in diameter, honeycombed. Corolla 13 mm. long ; 

 lobes lanceolate, subacute, 2 mm. long. Achenes 4 mm. long, villous 

 with long appressed hairs. Pappus 15 cm. long, straw-coloured. — 

 Harv. in Harv. & Sond. Fl. Cap. iii. 105. P. carnosa, Muschler in Engl. 

 Bot. Jahrb. xlvi. 95, 97. P. Feddeana, Muschler in Fedde, Repert, 

 ix. 384. 



Distrib. — Great Namaqualand; Luderitz Bay, January, Dinter, 

 1026 ! Damaraland ; Berseba, August, von Trotha, 129 ! Schultze, 406 ! 

 Carnarvon ; Karel Kriegers G-rave, between the Karmee Bergen and 

 Buffels Bout, September, Burchell. 1587. 



44. P. scariosa, Linn. f. Suppl. 356. 



A shrub 2-3 ft. high ; branches flexuous, glabnms. Leaves alter- 

 nate, obovate or oblong-obovate, rounded at the apex, about 5 mm. 

 long and 2 mm. broad, thick and coriaceous, glabrous. Hiads soli- 

 tary, terminal, subcampanulate, nearly 2 cm. long, about 1*8 cm. in 

 diameter, 14 flowered. Involucral bracts about 6-seriate ; the outer- 

 most much smaller than the others, broadly ovate, subacutelv mucro- 

 nate, 3 5 mm. long, 2 mm. broad, broadly keeled, with membranous 



