6 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN ' | VOL. 10 



Rhodobryum grandifolium (Tayl.) Par 



VENEZUELA: Bolivar: Chimanta Massif, between Bluff Camp and low promontory 

 north of Bluff Camp, along west-facing portion of Chimanta-tepui (Torono-tepui), alt. ltinu 

 1700 m, SteyermarTc 75641. 



MNIACEAE 



Mnium longirostrum Brid. 



VENEZUELA: Bolivar: Chimanta Massif, southeast-facing forested slopes below escarp- 

 ment, alt. 1880-1955 m, SteyermarTc $ WurdacTc 1146. 



RHIZOGON I A< KA E 



Rhizogonium spiniforme (Hedw.) Bruch. 



VENEZUELA: Bolivar: Chimanta Massif, wet mossy forest with sandstone boulders, 

 between Camp 3 and main line of sandstone bluffs, northwestern part of Abacapa-tepui, alt. 

 1210-1600 m, SteyermarTc 75084; between Bluff Camp and low promontory north of Bluff 

 Camp, alt. 1600-1700 m, SteyermarTc 75679 ; densely forested slopes between upper reaches of 

 Rio Tirica, southeast portion of Apacara-tepui, alt. 1700-1850 m,. SteyermarTc 75982. 



ORTHOTRIC ! I A.CEA E 



Zygodon reinwardtii (Hornsch.) Al. Br. 



VENEZUELA: Bolivar: Chimanhi Massif, vicinity of upper falls of Rio Tirica, above 

 Summit Camp, alt, 1940-2090 m, SteyermarTc $ WurdacTc 619, 895a. 



Groutiella apiculata (Hook.) Crum & Steere 



VENEZUELA: Bolivar: Chimanta Massif, between Bluff Camp and low promontory 

 north of Bluff Camp, along west-facing portion of Chimanta-tepui (Torono-tepui), alt. 1600- 

 1700 m, SteyermarTc 75680. 



Macromitrium ulophyllum Mitt, 



VENEZUELA: Bolivar: Chimanta Massif, six collections from trees and shrubs at alti- 

 tudes of 2000-2200 m, indicating a broad distribution in this limited area. Amazonas: Cerro 

 Sipapo (Paraque), on shrubs near summitt of Peak I, alt. 2000 m, Mag u ire 4' Politi 28149. 



Macromitrium podocarpi C. M. 



VENEZUELA: Bolivar: Chimanta Massif, elfin forest formation on plateau of southeast- 

 facing upper shoulder of Apacara-tepui, alt. 2000 m, SteyermarTc 75745. 



Macromitrium dussii Broth. 



VENEZUELA: Bolivar: Chimanta Massif, elfin forest formation on plateau of southeast- 

 facing shoulder of Apacara-tepui, alt. 2000 m, SteyermarTc 75744. 



The broad, acutely pointed leaf apex of this species is in bold contrast to the 

 slenderly acuminate leaf tip of M. dubium. New to Venezuela. 



Schlotheimia trichomitria Schwaegr. 



VENEZUELA: Bolivar: Chimanta Massif, scrub forest near Summit Camp, alt. 1925 m, 

 SteyermarTc WurdacTc 278; forested slope below summit of western escarpment, Torono- 

 tepui, alt. 1970 m, SteyermarTc 4" WurdacTc 708 ; open dwarf forest, north-facing slopes on 

 summit above valley of Cafio Mojado, alt. 2030-2150 m, SteyermarTc $ WurdacTc 1033. 



SPLACHNACEAE 



Tetraplodon mnioides (Hedw.) Bry. Eur. 



VENEZUELA: Cerro Sipapo (Paraque), on rocks in southeast summit, alt. 1800 m, 



Maguire $ Politi 27808. 



This unusual record represents the first occurrence of the species in north- 

 ern South America as far as I am aware. It might be construed as an example 

 of the southward push of vegetation during the postglacial ages. 



