A revision of the genus Pteronia (Gompositae) . 325 



Pearson, 3990 ! between Gansfontein and Papekuil, December, 

 Pearson, 3981 ! north of Zoutpansdrift, November, Pearson, 5001 ! 

 Griqualand West ; near Kimberley, Bohis, 6820 ! Laingsburg ; 

 Witteberg Eange, near Matjesfontein, 2800 ft., February, Rehmann, 

 2920 ! and in Herb. Bolus, 5671 ! Prince Albert ; near Prince Albert, 

 December, Bolus, 11521 ! Middelburg ; Grootfontein, Tyson, 2669 ! 

 Oudtshoorn; Oudtshoorn and Morrass River Drift, December, Bolus, 

 11949 ! Oudtshoorn, October, Miss Britten, 72 ! Ill ! Mossel Bay ; 

 Gauritz River, December, Pappe I Eklon and Zeyher, 99, 12 ! George ; 

 near George, Zeyher ! South Africa ; without locality, Niven I Massmi ! 

 Kerb. Pallas in Herb. Mus. Brit. I 



59. P. sordid a, N.E. Br. in Kew Bull. 1906, 103. 



A small shrub about - 35 m. high. Branches glabrous, rarely 

 minutely whitish pubescent, at length becoming glabrous ; bark 

 rough and splitting. Leaves opposite, ericoid, linear or lanceolate- 

 linear, obtuse, subconnate at the base, 2-6 mm. long, flat above, 

 i-ounded beneath, glabrous or very minutely puberulous when young. 

 Heads about 8-flowered 1*2-1*4 cm. long, obconic. Involucral bracts 

 7-seriate, closely imbricate, oblong-linear, obtuse, narrowed at the 

 base, glabrous, with membranous margins. Receptacle small, 

 fimbriate. Corolla 1*1 cm. long ; lobes 2 mm. long, lanceolate, sub- 

 acute. Sfa mens inserted about f down the tube ; filaments 4*5 mm. 

 long, filiform ; anthers, 3*5 mm. long, linear, with a lanceolate acute 

 apical appendage. Achenes 3*5 mm. long, oblong, densely villous. 

 Pappus 8-9 mm. long, as long as the corolla, light straw-coloured. 



Distrib. — Graaff Reinet, near Graaff Reinet, August, Bolus. 614 ! 

 Murraysburg, Conway Farm, 3600 ft., August. Gilfillan in Herb. 

 Galpin, 5527 ! Murraysburg, June, Tyson, 221 ! 



60. P. ambrariifolia, Engl, in Engl. Bot. Jahrb. xxvii. 198. 



Branches angular, dark purple when dry, glabrous, branchlets 

 sulcate, slender. Leaves opposite, free from each other at the base, 

 linear, trigonous, with obtuse recurved tips, fleshy, glabrous Heads 

 terminal, solitary, sessile, about 12-flowered, 1*5 cm. long, 1 cm. in 

 diameter, narrowly obconic when open. Involucral bracts 5-6-seriate ; 

 the outermost ovate, about 4 mm. long, gradually increasing upwards ; 

 the innermost lanceolate, subobtuse" glabrous except the submenu ' *#"^ 

 branous minutely ciliate margins. Corolla-tube 9 mm. long, ribbed in 

 the lower part, gradually widened upwards, glabrous ; lobes linear- 

 lanceolate, subacute, 2*5 mm. long. Anthers linear, with a lanceolate 



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