1953] 



BOTANY OF THE GUAYANA HIGHLAND 



157 



longis 1.0-1.5 mm. latis, tubo ca. 2 cm. longo 3 mm. diam.; antheris connatis 

 ca. 18 mm. longis, appendicum apicibus acutis ca. 2 mm. longis, appendicibus 

 caudatis linearibus ca. 5 mm. longis obtusiusculis 2-3 mm. adjacentibus connatis, 

 filamentis 8-10 mm 5 longis in orificio tubi affixis; pappo purpureo-sordido, setis 

 fragilibus minute barbellatis; stylo 4-5 cm. longo ramulis 1.5-2.0 mm. longis 

 obscure trilobatis glabris; achaeniis 10-12 mm. longis nigrescentibus obscure 

 prismaticis glabris, annulo brevissimo. 



TYPE: spare tree 2-8 m. high, flowers reddish-purple, frequent in moist 

 scrub woodland of cumbre, 2000 m. alt., Cerro Paru, Amazonas, Venezuela, 

 Feb. 2, 1951, Richard S. Cowan & John J. Wurdack 31131; New York Botanical 

 Garden. Paratypes: Cerro Paru, Cowan & Wurdack: leaves from juvenile trees 

 averaging much larger than those of flowering trees (data as for type 31131), 

 31132; trees 2-10 m. high, stamens, pistils, apex of corollas brownish-purple, 

 scrub forest cumbre 2000 m. alt., 31310. Cerro Huachamacari, Maguire, Cowan & 

 Wurdack, Terr c Amazonas, Venezuela, December 1950: fastigiately branched 

 tree 10 m. high, corollas purple, frequent, 1500 m. alt., 30007; virgate tree 5-8 

 m. high, branches whorled in 3's, flowers pale purplish, freouent in elfin forests, 

 Summit Camp, 1500 m. alt., 30083; vegetative shoots from immature tree, 1500 

 rv alt., 30184; wooded areas below East Escarpment, 1820 m. alt., 30256. 



Gongylolepis pedunculata is obviously most closely related to C. bracteata, 

 differing primarily by the conspicuous bracts subtending the heads of the latter. 

 They both seem to form an interrelated subgeneric group with G. colombiana of 

 the Venezuelan Andes, the only species of the genus known to occur outside of 

 the Guayana Highland. 



3. Gongylolepis colombiana (Cuatr.) Cuatrecasas, Fieldiana 27: 51. 1950. 



Apparently confined to the Eastern Andes of Colombia and Venezuela. This is 

 the only species of the genus which is known to occur outside the limits of the 

 Guayana Highland. No material of it has been seen by us. 



4t Gongylolepis paniculata iVjaguire & Phelps, sp. nov. 



Arbor parva vel frutex, glaber; ramis crassis internodiis 1 cm. vel minus 

 longis; foliis 12-25(-27) cm. longis (2.5-)3.0-8.0 (9.0) cm. latis, anguste ob- 

 lanceolatis vel elliptico-oblanceolatis chartaceis, nervis primariis 12-15 jugis 

 lateralibus prominulis anastomosis non ad marginem extendentibus, venulis 

 prominenter reticulatis, apicibus late obtusis vel minute retusis vel obtusius- 

 culis aliquantum conduplicatis, petiolis 1.0-1.5 mm. longis late alatis; in- 

 florescentiis corymboso-paniculatis, terminalibus (3) 5-15 capitulatis, axi- 

 bus 20-60 cm. longis, ramis primariis 15-30 cm. longis 2-3-ramosis, ramis ul- 

 timis 2-4 cm. longis, bracteis foliatis ovatis vel oblongo-obovatis sessilibus 

 vel subsessilibus (1.0) 3=0-6.0 (7.0) cm. longis (1) 2-3 cm. latis, bracteolis 

 squamiformibus 2-3 mm. longis obtusis, capitula remote subtendentibus; capitulis 

 (3) 5-15 floribus; involucris anguste campanulatis 3.0-3.5 cm. longis, bracteis 

 concavis coriaceis punctatis valde gradatis marginibus scariosis exterioribus 5-8 

 mm. longis ovatis vel rotundatis> interioribus anguste elliptico-oblongis 25-30 

 mm= longis; receptaculo glabro piano vel aliquantum convexo; corollis profunde 

 bilobatis ca. 3.0 mm. longis glabris, tubo ca. 12 mm. longo 5-costato, lobo pos- 

 teriori ca. 18-20 mm. longo 3-4 mm. lato, minute tridentato; lobo anteriori pro- 

 funde bifido, segmentis ca. 18 mm. longis ca. 0.75-1.25 mm. latis; filamentis ca= 

 8 mm. longis, in orificio tubi affixis, antheris 14-16 mm. longis, appendicum 

 apicibus obtusiusculis, appendicibus caudatis truncatis ca. 5 mm. longis, 3-4 

 mm. adjacentibus connatis; pappo albido-sordido ca. 2,0 cm. longo, setis numero- 

 sis pluriseriatis fragilibus minute barbellatis, in corona 0.5 mm. alta connatis; 



