1958 



THE BOTANY OF THE QUAY AN A HIGHLAND PART III 



35 



5 mm longis, 5 mm latis, saepe apiculatis, 5-7-nervatis, superioribus lanceolatis, 

 ca. 20 mm long-is, 5 mm latis, acutis, ad basim submembranaceis ; sepalis 3, liberis, 

 lanceolatis acutis rubritinctis, 30-35 mm longis, indistincte 9-11-nervatis, ad 

 basim per 5 mm submembranaceis; corolla 35-45 mm longa, subearnosa, pur- 

 pureo-rubra, recur vo-porrecta aliquant um irregulari, petalis ad basim in tubo 

 membranaceo per 10-15 mm connatis, sursum liberis, segmentis lanceolatis, na- 

 viculoideis, 20-35 mm longis, 6-8 mm latis, marginibus minute ciliolatis, multi- 

 venatis, basi aurieulata, apice acuto ; filamentis membranaceis, 0.6-0.8 mm latis, 

 ad basim corollae per 10-15 mm adnatis, partibus liberis ca. 10 mm longis; 

 antheris 17-18 mm longis. linearibus, muriculatis, bithecatis. ad apicem trans- 

 verse biporis; ovario triloculari ad basim membranaceo sursum indurato, loculis 

 pluriovulatis ; seminibus subpyramidalibus, striatis. ca. 3 mm diam. 



Type : common red-flowered perennial herb in open scrub savanna, Campo 

 Grande, 1500 m alt., Jan 10, 1949, Cerro Sipapo, Amazonas, Venezuela, Maguire 

 d- Politi 28195 (holotype NY). 



Paratypes: VENEZUELA: Amazonas, Cerro Sipapo: on sandstone 1500-2000 m alt., 

 Maguire 4' Politi 21484, 27872, 27954, 28670; on granite at 600 m alt., Maguire $ Politi 

 27400 and 28703 ; Cafio Fluta, 50 km s.e. Puerto Ayacucho at 200 m alt.. Maguire $ Baum- 

 gartner 31834 ; Cerro Guanay, at 1800 m alt., Maguire, Phelps, Hitchcock 4' Budowski 31757 ; 

 Cerro Yutaje, B. Maguire 4' C. K. Maguire 35200, 35227, 35400; Cerro Coro-Coro, Maguire cf 

 Maguire 35485. 



Distribution. Kunhardtia rhodantha is one of the more conspicuous plants 

 on the cumbre of Cerro Sipapo, being widely and commonly distributed on open 

 savannas, terraces, ridges, and summits from 1500 to 2000 m. It has been col- 

 lected in similar habitats from Cerro Guanay and occurs quite commonly on Ser- 

 rania Yutaje, all belonging to the Roraima complex in Venezuelan Amazonas 

 north of the Ventuari River. At lower altitudes this striking species has been 

 collected on granite on Cerro Sipapo at 700 m, and near Puerto Ayacucho at 

 200 m. 



Among the Schoenoccphaleac, Kunhardtia by its ample corollas and numerous 

 ovules, more than its immediate congeners, occupies a primitive phyletic posi- 

 tion. Its anthers, however, have become the most modified of any in the tribe. 



7. Guacamaya Maguire, gen no v. 



Inflorescentia hemisphaerica magna solitaria, bracteis involucralibus bival- 

 vatis saccatis connatis non dehiscentibus subtenta ; spiculis numerosis patentibus 

 sessilibus spiraliter affixis ; sepalis liberis; corolla inelusa. petalis ad basim con- 

 natis; filamentis ad basim adnatis; antheris bithecatis, biporis; ovario triloculari. 

 loculis pluriovulatis; seminibus subprismaticis. striatis. non appendiculatis. 



Bb, petal, X 3M>; Be, stamen, X 7M>; Bd, apical pores of anther, X 10; Be, detail of muricu- 

 late surface, anther, X 15; Bf, cross-section diagram of capsule, upper % X 3 ; Bg, long- 

 section diagram of capsule (position of cross section indicated), X 3; Bh, leaf-sheaths, X */i ; 

 drawn from Maguire, WurdacJc 4- Bunting 36365, 36418, and Schultes, Baker 4~ Cabrera 18187. 

 Ca-Ch, Sclioenocephalium cucuUatum. Ca, spikelet, X 2%; Cb, petal, X 3^; Cc, stamen, X 

 7%; Cd, apical pores of anther, X 10; Ce, detail of muriculate surface, anther, X 15; Cf, 

 cross-section diagram of capsule, X ; Cg, long-section diagram of capsule, X 6 ; Ch, leaf - 

 sheaths, X % ; drawn from Maguire, Cowan 4' Wurdack 30486 and Maguire, Wurdack 4r Bunt- 

 ing 37631. Da-Dh, Sclioenocephalium teretifolium. Da, spikelet, X 2 1 /£; Db, petal, X 3%; 

 Dc, stamen, X "VL>; Dd, apical pores of anther, X 10; De, detail of muriculate surface, anther, 

 X 15; Dh, leaf-sheaths, X %; drawn from Maguire 4' TVurdack 35600 and Maguire, Wurdack 

 4- Bunting 36468. 



