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MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



[VOL. 10 



2b. Perama dichotoma var. scaposa (Gleason & Standley) Steyerm., comb nov. 

 Fig. 78, D. 



Perama scaposa Gleason & Standley, Field Mus. Bot. Ser. 7: 475-476. 1931. 



Distribution: damp sandstone cliff faces and along streams on upper slopes 

 and summits of the sandstone table mountains of Cerro Duida and Serrania Paru 

 in western Venezuela, locally on the Kaieteur Plateau of British Guiana and 

 Tafelberg in Surinam, at altitudes of 1430-2215 m. 



VENEZUELA. Amazonas : summit of Peak no. 7, summit of Mount Duida ; 

 alt, 2215 m ; Aug 1928-April 1929, G. H. H. Tate 664 (holotype of P. scaposa, NY, 

 isotype, F) ; Ridge 23 C, summit of Mount Duida, same date ; Tate 704 (paratype 

 of P. scaposa, NY) ; Cano Sapo, summit of Mount Duida ; alt. 1938 m ; Aug 1928- 

 April 1929, Tate 597 (paratype of P. scaposa, NY) ; sandy stream bank at Cen- 

 tral Camp, summit of Mount Duida; alt. 1500 m; 20-28 Dec 1928, Tate 548 

 (paratype of P. scaposa, NY) ; on high moist ridge top, summit of Cerro Duida; 

 alt. 1820-2075 m ; 4 Sep 1944, Steyermark 58334 (F, NY) ; moist exposed cliff 

 face with Brocchinia tatei, Cano Negro, Cerro Duida; alt, 1560 m; 25-26 Aug 

 1944, Steyermark 58033 (F, NY, VEN) ; occasional in cumbre along west rim, 

 Serrania Paru ; alt. 2000 m ; 2 Feb 1951, Cowan & Wurdack 31143 (NY) ; Ser- 

 rania Paru; alt. 2000 m; 4 Feb 1951, Cowan & Wurdack 31208 (NY) ; frequent 

 along Culebra Creek, Cerro Duida ; alt. 1600 m ; 22-24 April 1949, B. Maguire & 

 B. Maguire, Jr. 29081 (NY) ; Cano Negro basin, Cerro Duida; alt. 2000-2300 m; 

 23 Nov 1950, Maguire, Cowan, & Wurdack 29700 (NY). BRITISH GUIANA. 

 Kaieteur Savannah; alt. 343 m; 4 Sep 1937, Sandwith 1353 (NY). SURINAM. 

 Base of dripping cliffs, Tafelberg; 28 July 1944, Maguire 24192 (NY). 



2c. Perama dichotoma var. hirsutula Steyerm., var. nov. 



A var. dichotoma foliis subtus omnino dense pubescentibus pilis plerumque 

 1.5-2 mm longis recedit. 



VENEZUELA. Bolivar: along stream, vicinity of camp 150 at km 150 in 

 valley of savanna of Rio Uarama, northeast of Luepa; alt. 1220 m; 24-25 April 

 1960, Steyermark & 8. Nilsson 561 (holotype, VEN, isotype, Upssala). 



Known only from the type in the Gran Sabana, state of Bolivar, eastern 

 Venezuela, near the British Guiana border, at altitudes of 1220 m. 



"When Poeppig and Endlicher described their Perama dichotoma from the 

 Rio Para, Brazil (Nov. Gen. & Sp. 3: 29. pi. 235. 1845), they made no mention 

 in their description of the relative glabrity or indument of the calyx and 

 hypanthium, and their plate shows these parts completely glabrous. They further 

 stated that the corolla was externally glabrous, and that the seeds were smooth. 

 K. Schumann (in Martius's Flora Brasiliensis 6(6) : 91. pi. 86. 1889) later de- 

 scribed the calyx as shortly ciliate or aculeate-serrulate and the ovary as glabrous, 

 while the seeds were described as transversely lineolate. 



In 1931 Gleason & Standley (Field Mus. Bot. Ser. 7: 475-6) segregated 

 Perama scaposa, on the basis of Tate's collections from the summit of Cerro 

 Duida. They attempted to distinguish it on the basis of its densely paleaceous- 

 pubescent hypanthium and smooth globose seeds, as contrasted with the supposed 

 glabrous hypanthium and 3-angled lineolate ("punctate") seeds of P. dichotoma. 



An examination of an isotype specimen of P. dichotoma (Poeppig & Endlicher 

 2994) in NY reveals a calyx which has the margins aculeolate-ciliolate or shortly 

 hispidulo-ciliolate, whose hypanthium is definitely hispidulo-setulose at the sum- 



