Conyza.'] Lxxiii. composite) (olivee and hiern). 319 



147. G. Schimperiy Schultz Bip. in PL Schimp. Abyss, sect i. n. 124. 

 C. absinthifoUa, DC. Prodr. v. p. 383. G. macrorrhiza, Schultz Bip. in 

 PI. Schimp. Abyss, sect. ii. n. 1104. E. macrorrhizus, Schultz Bip. in 

 Schweinf. Fl. ^Ethiop. 147. Cfr. C sjpathulifolia^ Maxim, in Kegel, 

 Descr. PI. Nov. ii. p. 13 (1874). 



Wortli Central. Monbuttu-Iand, Schweinfurth ! 



srile ILand. Abyssinia, Sckimper! Roth! Hildebrandt ! 



Mozamb. Blstr. Kilima-njaro, Rev. C. New ! 



Extends to India. 



23. PSIADIA, Jacq. ; Benth. et Hook. f. Gen. PI. ii. p. 284. 



Capitnla heterogamous radiate, ray-florets $ in several series, 

 disk-florets fewer staminate. Involucre campannlate, scales oo -seriate, 

 ovate to linear, outer smaller, imbricate. Receptacle naked. Corolla 

 of ray ligulate, lignle small, entire or 2-3-dentate ; of disk tubular 

 5-toothed. Anther-base obtuse, 2-dentate. Achenes 3-6-costate, but 

 slightly or not compressed, base narrowed callous ; setae of pappus 

 1-seriate. — Glabrous, often with more or less viscid extremities, (vil- 

 lous or hirsute) shrubs. Leaves alternate, entire or toothed. Capitula 

 small or of medium size, in terminal corymbs. Ray-florets yellow. 

 A small genus chiefly confined to the Mascarene Islands. 

 Nearly glabrous. Ligule small. 



Leaves lanceolate acuminate or cuspidate 1. P. arabica. 



Leaves oval-oblong, obtuse, mucronate 2. P. dodoiuBCBfolia. 



Hoary -tomentose. Ligule of the ray-florets conspicuous . 3. P. incana. 



1. P. arabica, Jauh. et Spach, Illustr. Plant Orient, iv. p. 85, 

 tt. 352, 353. A branched shrub ranging up to 6 ft. or more. Branchlets 

 glandular-puberulous or glabrate. Leaves lanceolate, more or less 

 acuminate or cuspidate, narrowed at the base into the petiole, entire 

 or distantly serrulate, subcoriaceous, 2-3 in. long, the younger ones 

 resinous-glistening and marked with minute glandular dots ; margins 

 undulate or flat ; midrib depressed above, prominent beneath ; lateral 

 veins not conspicuous ; petiole ranging up to ^ in. Capitula 35-75- 

 flowered, hemispherical, ^~J in. diameter, on pedicels ranging up to 

 •^ in., in many-headed corymbose cymes, equalling or rather overtop- 

 ping the leaves. Involucral scales 3-5-seriate, subcoriaceous, puberu- 

 lous or glabrous, obtuse. Ligule small, entire or 2-3-dentate. Flowers 

 yellow. — P. resinifloray Schultz Bip. in Schweinf. Beitr. Fl. .^thiop. pp. 

 286, 308 ; Nidorella punctulata^ DC. Prodr. v. p. 323 ; P. pundulata, 

 Vatke in Oesterr. Bot. Zeitsch. xxvii. 196 (1877). 



MTile Xiand. Abyssinia, Schimper! HildebrcPAdtf Beccari; Somali-land, Hilde- 

 brandt. 



Mozamb. Distr. Zanzibar, Kirk! 



Occurs also among the mountains of Yemen in Tropical Arabia, and also among 

 the Asbestos Mountains in the Kalahari district of South Africa; it is very nearly 

 related to, if not identical with, a species from Madagascar. 



2. P. dodonaBSBfolla, Steetz in Peters Mossamh. Bot. p. 385. A 

 shrub. Branchlets short, leafy and shghtly puberulous at the extre- 

 mities. Leaves oval-oblong, obtuse and mucronate at the apex, nar- 

 rowed at the base into the petiole, entire, glabrous, \\'-^\ in. long, 



