2 957] 



THE BOTANY OF THE GUAYANA HIGHLAND— PART II 



371 



TYPE: shrub 1-1.5 m high, rays yellow, occasional, open slopes at 2400 m 

 alt., Ilu-tepui, Edo. Bolivar, Venezuela, March 20, 1952, Bassett Maguire 33523 

 (NY). Paratypes: shrub 2 m high, scrub savanna at 1100 m alt., Holi-tipu, British 

 Guiana, November 10, 1951, Maguire & Fanshawe 32529; Ilu-tepul at 2300 m 

 alt., Maguire 33540; shrub 2 m high, small "bush islands/' savannas between 

 Chi-Chi and Chinowieng at 1000 m alt., February 10, 1955, Maguire, Bagshaw & 

 Maguire 40648 (intermediate to var. cardonae). 



The variant with paler, firmer, and smaller leaves seems to be confined to 

 the eastern part of Guayana in Venezuela and adjacent British Guiana. 



Calea divaricata Benth. Jour. Bot. Hook. 2: 44 (1840) var. divaricata. 



Galea suffruticosa Maguire & Wurdack, Mem. N. Y. Bot. Gard. 8: 149. 1953. 

 TYPE: Richard Schomburgk, "near the Roraima Mountain" [Venezuela], Kew. 

 Generally distributed on open areas, Gran Sabana, Venezuela, and Ayanganna 

 Savanna, British Guiana. 



Calea divaricata var. diffusa Maguire & Wurdack, var. nov. 



Suffrutex diffusus, 5-6 dm altus; laminis ca. 1 cm longis; pedunculis 1.0-1.5 

 cm longis; capitulis radiatis, parvis, 6 mm altis, floribus ligulatis 3-4, floribus 

 disci 8-10, corollis ca. 3.5 mm longis; achaeniis ca. 2 mm longis, squamulis 

 oblanceolatis; obtusis, ca. 1.5 mm longis. 



TYPE: diffuse shrub 6 dm high, rays 3-4, yellow, rare but forming colonies 

 associated with No. 33298 (C. divaricata var. divaricata), Kamarang Head, Gran 

 Sabana, Estado Bolivar, Venezuela, at 800-950 m alt., March 6, 1952 (NY). 



Strikingly distinct in the field by virtue of its reduced stature, more diffuse 

 habit and smaller floral and vegetative parts, this variant maintains discrete 

 colonies within populations of var. divaricata, 



C. divaricata is used by Arecuna Indians as a medicinal plant. 



Calea linearifolia Maguire & Wurdack, sp. nov. (Fig. 70) 



Frutex suffruticosus 3-15 dm altus; ramulis tenuibus acute sulcate angulatis, 

 inter angulos scabrido-hirsutulis; foliis oppositis, laminis lineari-oblongis vel 

 lineari-oblanceolatis, (1.5)2 - 3 cm longis, 1.5 ~ 3(5) mm latis, glabris, coriaceis, 

 subtus punctatis, firme nervatis, venis prominentibus, valde margini-nervatis, 

 apice obtuso, basi angusta, sine oetiolo manifesto; inflorescentiis terminalibus, 

 capitulis 1-2, bracteis subtendentibus fere 2-jugis lineari-lanceolatis, glabris, 

 punctatis, 7-8 mm longis, capitulos excedentibus; pedunculis 2-3 cm longis, 

 glabris, valde sulcate angulatis; phyllariis 3-seriatis, oblongo-lanceolatis, 

 obtusis 3-5 mm longis, glabris, vittatis; paleis ca. 5 mm longis, obtusis; flori- 

 bus ligulatis probabiliter deficientibus, floribus discoideis 5-10 hypocrateri- 

 formibus, ca. 4 mm longis; achaeniis albidis, 4-angulatis, ca. 2 mm longis, gla- 

 bris, sparse ciliolatis angulis exceptis; pappo ca. 3 mm longis, squamulis 12-15, 

 2-seriatis, scariosis, lineari-acuminatis. 



TYPE: shrub 0.3-1.0 mm high, in old fruit, occasional, cumbre sabanita, 

 head of camp stream at 2000 m alt., Cerro Paru, Terr. Amazonas, Venezuela, 

 February 2, 1951, Cowan & Wurdack 31178 (NY). Paratype: suffruticose shrub 

 0.5-1.5 m high, western rim Cerro Paru at 2000 m alt., February 4, 1951, Cowan 

 & Wurdack 31219. 



A most distinct species, known only from the cumbre of Cerro Paru. This 

 small shrub is probably a derivative of C. abelioides, the more widespread High- 

 land species south of the Ventuari River. 



Calea lucida Maguire & Wurdack, sp. nov. (Fig. 70.) 



Frutex ramosus 4-8 dm altus; ramulis purpurellis, valde sulcate angulatis, 



