1963] 



BOTANY OF THE GUAYANA HIGHLANDS PART V 



241 



may represent a hybrid population between var. galioides f . quaternata and var. 

 longiflora. 



3d. Perama galioides var. longiflora Steyermark, var. nov. Fig. 80, D-G. 



A var. galioides f. galioides corollis 6.5-8 mm longis, tubo 5-6.5 mm longo, 

 antheris 1.3-1.7 mm longis recedit ; caulibus glabris vel superne parce adpresso- 

 pubescentibus ; foliis 3-4-verticillatis glabris 1.5-2.5 mm latis inferne confertis 

 internodiis brevibus ; calycis segmentis 4-4.5 mm longis glabris vel parce ciliatis 

 pilis 0.2-0.8 mm longis ; corollae limbo extus glabro vel parce minute puberulenti, 

 lobis extus pilis brevibus paucis instructis. 



Distribution. Known only from the upper Rio Orinoco, near mouth of Rio 

 Ventuari, in southwestern Venezuela at an elevation of 125 m. 



VENEZUELA. Amazonas: locally abundant in Sabana de Mayo, right bank 

 of Rio Orinoco, 10 km above mouth of Rio Ventuari ; alt. 125 m ; 31 Jul 1959, 

 Wurdack & Adderley 43692 (holotype NY). 



The corollas, calyx, and anthers are longer than in typical var. galioides or 

 any of the other variations of P. galioides. In the short-styled, long-exserted 

 anther type of flower, the corollas are longer, 7-8 mm long with the tube 6-6.5 

 mm long, whereas in the long-styled, included anther type the corollas are some- 

 what shorter, 6.5-7 mm long with the tube 5-5.5 mm long. In general, there 

 appears to be less marked ampliation of the corolla-limb, at least in the exserted 

 stamen type of corolla, than in the other varieties of P. galioides. The corolla- 

 limb is glabrous to minutely puberulent without and sparingly subhirtellous 

 without with a few short setae near tip. 



Aparently, var. longiflora, represents a variation of P. galioides with longer 

 corollas, calyx, and anthers, but in other respects is mostly like typical P. 

 galioides var. galioides. 



3e. Perama galioides var. hispida (H.B.K.) Steyermark, comb. nov. Fig. 80, A-C. 

 Mattuschlcea hispida H.B.K. Nov. Gen. & Sp. PI. 2: 271. 1817. 



This consists of the following two forms, as distinguished in the key to vari- 

 eties and forms. 



Perama galioides var. hispida f . hispida 



Perama galioides var. hispida (H.B.K.) Steyermark. 

 Mattuschlcea hispida H.B.K. Nov. Gen. & Sp. PI. 2: 271. 1817. 



Distribution. Usually low, rather moist savannas of southwestern and southern 

 Venezuela. 



VENEZUELA. Amazonas: Atures, Chaffanjon 177, ex herb. Paris (topotype, 

 F) ; Savanna of Atures, Sept 1887, A. Gaillard 267, ex herb. Paris (topotype, F) ; 

 Puerto Ayacucho, Alto Orinoco; 23 May 1940, Williams 13089 (F, VEN) ; occa- 

 sional in low-lying park-like savanna at Santa Barbara, junction of rios Orinoco 

 and Ventuari; 22 Feb 1951, Cowan & Wurdack 32036 (NY); abundant on 

 savanna on left bank of Cano Caname just below Limoncito, Rio Guainia ; alt. 

 130 m; 14 Oct 1957, Maguire, Wurdack, Keith, & Maguire 41884 (NY) ; Sabana 

 Pacimoni, Rio Pacimoni ; 2 Oct 1957, Maguire, Wurdack, Keith, & Maguire 41667 

 (NY) ; savanna on left bank of Carlo Hechimoni, Rio Siapa ; 9 Feb 1954, Maguire, 

 Wurdack, & Bunting 37614 (NY) ; Cerro Guanay: Cano Verada; 30 Jan 1951, 



