I960] 



BOTANY OF THE GUATANA HIGHLAND PART IV 



3 



DICRANACEAE 



Campylopus flexuosus (Hedw.) Brid. 



VENEZUELA: Bolivar: Chimanta Massif, slope forest above Rio Tirica, alt. 1365-1670 

 m, Steyermarlc 4' TTurdacTc 1259. 



Campylopus cubensis Sull. 



VENEZUELA: Bolivar: Chimanta Massif, moist forest along quebrada below waterfall, 

 vicinity of Camp 4, southwestern edge of Apacara-tepui, alt. 1800-2000 m, Steyermarlc 74980. 



I have referred this collection here in a broad sense and not without con- 

 siderable hesitation. The longer leaf cells, especially above where they are 

 linear rather than oval, suggest a distinct concept in comparison with the West 

 Indian plants as Mr. Howard Crum has suggested. Muller has described three 

 related species from Venezuela, but no critical comparison is possible from the 

 descriptions and the originals may have been destroyed. 



Campylopus richardi Brid. 



VENEZUELA: Bolivar: Chimanta Massif, scrub forest near summit tamp, alt. 1925 m, 

 Steyermarlc 4' Wurdack 315. 



Campylopus prealtus (C. M. ) Par. 



VENEZUELA: Bolivar: Savannas, vicinity Mission Santa Teresita de Kavanayen, alt. 

 1500 m, Maguire 4 Politi 28003. 



This collection helps to consolidate the known range of the species which 

 occurs in Puerto Rico. British Honduras, Venezuela and Brazil. 



Dicranodontium denudatum (Brid.) E. G. Britt. 



VENEZUELA: Bolivar: Chimanta Massif, moist, mossy forest, vicinity of Camp 4, south- 

 western edge of Apacara-tepui, alt. 1600-1800 m, Steyermarlc 75037. 



Dicranoloma steyermarkii Bartr., sp. now 



Sat robustum, caespitibus laxis, fuscescentibus, hand nitidis. Caulis usque 

 ad 6 cm altus, parce ramulosus. Folia eonferta, sicca patentia, arete flexuosa, 

 humida secunda, 10-12 mm longa, e basi concava, ovata, 1.5 mm lata, abrupte 

 longe setacea ; marginibus superne serratis; costa tenui, breviter excurrenti; 

 cellulis superioribus linearibus. incrassatis, porosis, inferioribus longioribus. 

 margines versus angustioribus, alaribus subquadratis. fere ad costa productis. 

 Folia perichaetialia intima erecta, longe setacea, fere ad thecam producta. Seta 

 circa 2 cm longa, tenuis; theca (immatura) inclinata, cylindrica, deoperculata 

 2 mm longa; operculo rostrato, 2 mm longa. Caetera ignota. 



VENEZUELA: Bolivar: Chimanta Massif, vicinity of Camp 4, Apacara-tepui, alt. 1800- 

 2000 m, on branch, Steyermark 74980b (type). 



The long perichaetium with the tips of the inner leaves reaching nearly to 

 the base of the capsule is a distinctive feature. 



LEUCOBRYACEAE 



Octoblepharum erectifolium Mitt. 



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

 in rock crevice, Steyermarlc 4" Wurdack 310. 



Octoblepharum cylindricum Schp. 



VENEZUELA : Bolivar : Chimanta Massif, summit, at edge of escarpment in and among 

 zanjones, alt. 2165-2180 m, Steyermarlc # Wurdack 674. 



