NO. 2 MOSSES OF AFRICAN EXPEDITION — DIXON 23 



PAPILLARIA AFRICANA (C. M.) Jaeg. 



Vicinity of Lake Naivasha, British East Africa, from lake level 

 (1,860 meters) to 1,950 meters elevation, July 17-Aug. 15, 1909, 

 No. 934. 



NECKERA COMPLANATA (L.) Huebn. var. MAXIMA Dixon, var. nov. 



Caules praelongi, ad 15 cm., molles. 



Hab. : Bamboo zone, western slopes of Mt. Kenia, along the trail 

 from West Kenia Forest Station to summit, at about 3,000 meters 

 alt., No. 1728. 



Except in the very elongate stems I find no difference from the 

 European plant. It is known from the Canaries and Algeria, but 

 is new to Central Africa. 



PINNATELLA ENGLERI Broth. 



Vicinity of Thika, British East Africa, alt. about 1,350 meters, 

 No. 1145. 



THAMNIUM HILDEBRANDTII (C. M.) Besch. 



Vicinity of Lake Naivasha, British East Africa, from lake-level 

 ( 1,860 meters) to 1,950 meters elevation, No. 877. Vicinity of Thika, 

 alt. about 1,350 meters, No. 1141. 



HYPNACEAE 

 HYGROAMBLYSTEGIUM PROCERUM Dixon, sp. nov. 



(Plate 2, fig. 11) 



Perrobushim; caules 20 cm. longi et ultra, inferne plus minusve 

 denudati, hand radiculosi, superne confcrte regulariter eleganter 

 pinnati, ramis subaeqiialibiis pro more robustis, 1-1.25 cm. longis, 

 frondem pectinatam ad 2 cm. latam pulchre aurantiacam vel oliva- 

 ceam sistentibus. Paraphyllia numerosa. Folia H. Micini, caulina 

 magna, 1.5 mm. longa, deltoideo-ovata, ramea angustiora, ovato- 

 lanceolata, omnia tenerrime indistincte denticulata vel subintegra; 

 costa valida, percurrens vel plerumque in cuspidem robustam ex- 

 currens. Dioicum videtur. Fructus caret. 



Hab.: Vicinity of Thika, British East Africa, alt. about 1,350 

 meters, Sept. 6 and 7, 1909, No. 1140. Probably growing on wet 

 rocks in or near a stream. A few stems were found mixed with No. 

 1 139 (Philonotis speirophylla). 



This fine plant may be considered a subspecies of H. Ulicinum 

 (L.) Loeske ; structurally it is indeed almost identical, but I have 



