26 



BOTANiCAL GAZETTE. [ February, 



furaceous, anisopliyllous : leaves glabrate, chartaceous, 5- 

 nerved ; the larger oval, caudate-acuminate, minutely cor- 

 date, 5 or 6 inches long, half as broad ; the smaller ovate- 

 lanceolate, 10-15 li^es long : peduncles geminate or soH- 

 tary, i|-2 inches long, sub-equalling internodes : bracts 

 i-nerved ; the exterior ovate-lanceolate, shorter than flowers, 

 twice exceeding the obovate interior : calyx-Hmb narrow, sin- 

 uate: petals obovate-spatulate, nearly an inch long, roseate : 

 anthers laterally connate, oblong, connective slender for the 

 genus, its acutely conical spur a line long : style arcuate, elon- 

 gate (8 lines), stigma capitellate : berry ribbed, 6-celIed. 

 Pansamala, alt. 3800 feet, Sept., 1886 (Ex Pl. cit. 778). 

 B. gracths Hemsl., with nearly similar involucre, flower 

 and fruit, is isophyllous, leaves acute at base, solitary pe- 

 duncles several times exceeding internodes, bracts 3-nerved, 

 anthers free and inappendiculate. 



Explanation of Plate VI: Fig. i. Flowering branch, 

 nat. size. Fig. 2. Vertical section of flower. Fig. 3. Flower 



depnved ofpetals and stamens, enlarged. Fig. 4. Stamen, 

 enlarged. Fig. 5. Diagram of flower. 



Clibadium arboreum. — Tomentose: leaves scabrid 

 above, hairy beneath, triplinerved, appressed - serrulate, 

 ovate-acummate, 5-7 inches long, base narrowed to nearlv 

 half as long as petiole : corymb large, flat, dense : heads 

 subsessile, bracts ovate-oblong : involucre 3 lines hicrh • 

 bracts 9-10, pubescent, ciliate, firm, strongly nerved, obtu^^se \ 

 disk epaleaceous : fertile flowers 5, uniseriate ; achenia large 

 (I, hnes long), thick, winged below apex, black, shining: 

 stenle flowers lo-ii ; corolla exsert, i^ lines long, lobes 

 puberulous ; abortive achenia equaling the perfect, like them 

 naked except glandular-pubescent apex.— Pansamala, alt. 

 3,800 feet, June, 1886, (Ex Pl. cit. p^p^.-Remarkable by 

 arboreous habit, as stated by Mr. von Tiirckheim. Other 

 Central-American species, all suffl-uticose, the first nearly 

 alhed, may be distmguished as follows : 



C. Surinarmnse L., var. a»Tperum Baker. Petioles short leaves ronnde.l 

 atbase: heads «maller ; involucral bracts 6-8, acute; palSri-sX^vr : 

 achen.a small, short obovate, dull-pale, upper half villose : coro la-bbeJ 

 shaggThaifs"''""' «on^Picuously villose; abortive achenia hidden by 



C.Uwcarpum Steetz. Petioles very ahort, leaves narrowlv ovate- 

 lanceolate : heads sma 1 ; involucral bracts glabrous, long-ciliat^ W-fo?m 

 acutish: achema broad, thick^ black, apex naked and tubercukte 



C. a^rn,im.Ui.m Beath. Petioles long : fcrtile flowers bi-s°riatp • ster, 



ile fewer (3-4), subsessile by sbort abortive achenia ' 



