8 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 69 



Folia caulina 2 mm. longa, late ovato-oblonga, apice in mucronem 

 brevissimum latum convoluta, explicata tamen late rotundata obtusa 

 dentibus nonnullis parvis coronata, limbo angusto, 2-3-scriato, apud 

 basin parum dilatato circumdata. Cellulae hyalinae superiores 

 (usque ad 2/3 folii longitudinem) fibrosae, raro bipartitae. Pori 

 magni, dorsales numcrosissimi, ventralcs paucissinii vel nuUi. 



Folia ramea minima, circa 1 mm. longa, lenissime secunda, ovata, 

 brevissime obtusiuscule acuta, apice 3-4-denticulata, limbo peran- 

 gitsto, 1-2-seriato, denticulate. Pori dorsales numerosi, ventrales 

 perpauci. Cellulae chlorophyllosae peranguste ellipticae seu trape- 

 zoideae, ventrales, superHcie libcri, cellulae hyalinae dorso percon- 

 vexae, prominentes. 



Hab. : Loc. 3,630 meters, Nos. 1560 (type), 1561, 1563. 



The very slender habit, resembling that of 5. molliiscum, the short 

 branching, and the position of the chlorophyllose cells, on the ventral 

 surface of the leaf, separate this species from most or all of the 

 African species of the Subsccuuda section. It appears to be nearest 

 to S. gracilescens Hampe from southern Brazil ; it is in fact very close 

 to that species, which has the chlorophyllose cells in the same position, 

 the short branches, etc. The coloring is quite different, however, 

 the branching there is laxer, as is also the foliation, and the stem 

 leaves are rather smaller, viz., 1-1.5 mm., according to Warnstorf. 

 In view of the widely separated geographical areas these differences 

 must be held sufficient to keep the two apart. 



Sphagnum Davidii Warnst., from Ruwenzori, is a much more 

 robust plant, with longer branches, chlorophyllose cells central, 

 smaller stem leaves, more acute branch leaves, etc. 6". ruwensorense 

 Negri differs in the same direction, and is larger in all its parts. 



SPHAGNUM PAPPEANUM C. M. 

 Loc. 3,630 meters, No. 1562. 



SPHAGNUM RUGEGENSE Warnst. var. GRACILESCENS Warnst. 



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

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

 No. 1727. 



I have not seen the original plant (collected by Mildbraed on the 

 Deutsch Zentral-Afrika Expedition, in the Rugege-Wald, in mountain 

 bogs at 1,900 meters) ; but I have compared the present material 

 with Warnstorf 's description and figure in the Sphagnaceae (6), 

 with which it agrees in habit and in every particular except in one 



