A revision of the genus Pteronia (Compjositae). 



2 mm. long. Anthers shortly exserted. Achenes 3 mm. long, silky- 

 villous. Pappus 1 cm. long, brownish yellow. — Thunb. Fl. Cap. ed. 

 Schult. 630; DC. Prodr. v. 360; Harv. in Harv. & Sond. Fl. 

 Cap. iii. 102. 



Distrib. — Bushmanland ; between Klipplaat and Bitterfontein, 

 December, Pearson, 3878 ! Vanrhynsdorp ; Ebenezer, on stony hills 

 below 500 ft., November, Drege ! Calvinia ; below Bockland and in 

 Hantum, Thunberg ! Oudtshoorn ; " The Brook," near Ondtshoorn, 

 about 1100 ft., December, Bolus, 11946! South Africa, without 

 precise locality, Masson ! 



53. P. glabrata, Linn. f. Suppl. 358. 



A bush up to ft. high ; branches opposite, brown when dry, 

 glabrous. Leaves opposite, quite free from each other at the base, 

 linear, often somewhat falcate, rounded at the apex, 1-25 cm. long, 

 2 - 5-6 mm. broad, flat, 1-nerved, fleshy, glabrous, finely longitudinally 

 wrinkled when dry. Heads terminal, solitary, campanulate, 15-2 cm. 

 long, nearly 2 cm. in diameter. Involucral bracts about 5-seriate, 

 gradually increasing in size upwards ; the outermost broadly ovate, 

 about 3 mm. long; the innermost linear-oblong, 15 cm long, all 

 rounded at the apex, with narrowly membranous margins, glabrous. 

 Receptacle flat or slightly concave, honeycombed, and fimbriate, about 

 8 mm. in diameter. Corolla 1 cm. long, slightly and gradually 

 widened upwards, glabrous ; lobes linear-lanceolate, subacute, 2 mm. 

 long. Anthers exserted 15 mm. from the tips of the lobes. Achenes 

 3*5 mm. long, densely appressed silky-villous. Papjyus brownish- 

 yellow, 1 cm. long.— Thunb. Fl. Cap. ed. Schult. 630; DC. Prodr. 

 v. 630; Harv. in. Harv. & Sond. Fl. Cap. iii. 102. P. sesuviifolia, 

 DC. Prodr. v. 360; Drege, Zwei Pflanzengeogr. Docum. 108, 214. 



Distrib. — Namaqualand ; Plaat Klip, December, Pearson, 3284 ! 

 without locality, Pearson, 3440 ! Angra Pequena, January, Galpin and 

 Pearson, 7652 ! Little Namaqualand : Rietfontein, December, Pearson, 

 3763 ! Stinkfontein, September, Schlechter, 11097 ! between Steinkopf 

 and the Orange River, October, Phillips, 1597! Vanrhynsdorp; 

 Ebenezer, on stony, dry hills below 500 ft., November, Drege a ! 

 between Holgat Kiver and the Orange River, 1000-5000 ft., September, 

 Drege d ! South Africa, without locality, Ecklon, 76 ! 258 ! 



54. P. leptospermoides, DC. Prodr. v. 363. 



A shrub 2-3 ft. high. Branches glabrous, the young ones often 

 somewhat glaucous ; branchlets opposite. Leaves opposite, - 9-P5 cm. 



