260 LXXIII. COMPOSITE (OLIVER AND HIEKN). [Buthrioclluti. 



linear, base obtuse, apical connective subulate or lanceolate. Style- 

 branches exserted slender tapering, thinly hispid. Achenes obovoid 

 or ellipsoidal with about 6 prominent rounded ridges, somewhat rounded 

 above; hairs of pappus stiff hispid-scabrous very caducous. — Herb 

 with opposite or verticillate penniveined leaves and terminal corymbose 

 cymes of moderate- sized capitula. 

 Based upon the following species. 



1. B. Schimperi, 0. Sf H.; Benili. in EooJc, Ic. PI. 1183. 



Erect herb ; stem stout, smooth, early glabrous below, often freely 

 branched from the upper axils. Leaves in whorls of 3-4 or opposite, 

 lanceolate or ovate-lanceolate, acute, serrate, base rounded to the very 

 short broad ciliate petiole, confluent by a hairy, margin round the 

 stem, glabrous above, thinly pilose-tomentose beneath ; 4-6 in. long, 

 1-2 in. broad. Capitula about -J in. diameter, on tomentose peduncles 

 of ^-^ in. more or less, collected at the extremities in broad corymbose 

 cymes ; involucral scales ovate- to oblong-lanceolate. acute, firm, green 

 or purpHsh upwards with a broad scarious whitish serrulate margin, 

 innermost scales linear-oblong, wholly scarious. Corolla thinly glan- 

 dular. 



»rile Ziand. Abyssinia (ooll. 1863 no. 1497), Schimper .' 



Var. tomentosa. Differing in the tomentose stem and under surface of the leaves. 



Mozamb. Distr. Kilima Njaro, Bev. C. New! ' 



Var. longipcs. Leaves narrowed at base into a distinct petiole, denticulate, 

 opposite, closely puberulous beneath. Peduncles 3 together, terminating the branches, 

 exceeding the leaves. Flowers pale violet. 



XSTortli Central. Moubuttu-land, Schweinfurth ! 



6. VERNONIA, Schreb. ; Benth. et Hook. f. Gen. PI. ii. 227. 



Capitula homogamous, few- (very rarely 1-) or many-flowered. 

 Involucre various in form, from cylindrical to subglobose urceolate 

 hemispherical campanulate or turbinate ; scales numerous, pauci- or 

 niulti- seriate, usually wholly free, various in form and texture, acute 

 obtuse or with a terminal appendix. Receptacle naked, foveolate or 

 fimbrilliferous. Corolla tubular or campanulate or gradually dilated 

 above, usually equally 6 -fid. Anther-base sagittate or obtuse, apex 

 witVi a linear or lanceolate free connective. Achenes columnar or nar- 

 rowed below or turbinate, 4-5-gonus or 8-20 costate or cost® evanes- 

 cent, glabrous or hairy uniformly or in longitudinal series, in many 

 species sessile-glandular between the costa? ; with or without a distinct 

 basal callus. Pappus 2- pluri-seriate, rarely 1 -seriate, outer series 

 usually shorter than the inner, setaceous or squamiform ; inner usually 

 setaceous barbellate, white or coloured, persistent or caducous. — Herbs, 

 shrubs or trees. Leaves alternate, penniveined in African species, 

 entire, serrate or dentate. Capitula variously cymose or panicled, 

 rarely solitary. Florets purple reddish or white. 



A very largo genus common to the tropics and warmer regions of both hemi- 

 spheres, most numerous in Brazil. With exceptions, all of the following species are 

 peculiar to tropical Africa. Several important sections of the genus are not, or but 

 imperfectly, represented in this Flora. 



