22 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 69 



tegro nee crenulato, e cellularum seriebus 5-6 quarum apicalis 

 (sectione) multo major, ovata, subconlca, papulosa. Cetera nulla. 



Hab. : Loc. 3,630 meters, Nos. 1564 (type), 1550. 



In the absence of fruit the exact position of this fine species must 

 remain dubious, but the character of the apical cell of the lamellae 

 removes it far from P. commune, of which it has somewhat the habit, 

 but with much denser, more rigid leaves. The rather distant, spinose 

 teeth of the leaf margin, quite without the small intermediate teeth 

 found in some species, are also a marked character. The leaf base 

 is remarkably long. 



No. 1550 has shorter, more densely foliate stems. No. 1564 is 

 associated with Sphagnum, and is probably a paludal plant. 



HEDWIGIACEAE 



RHACOCARPUS HUMBOLDTII (Hook.) Lindb. 

 Loc. 3,630 meters, Nos. 1540, 1551, 1559. Gathered in quantity, 

 and in large, dense masses. It is evidently one of the dominant 

 mosses of the district. 



LEUCODONTACEAE 



ANTITRICHIA KILIMANDSCHARICA Broth. 

 Loc. 3,630 meters, No. 1569. Among grass. 



PTEROGONIUM ORNITHOPODIOIDES (Huds.) Lindb. 



Loc. 3,630 meters, No. 1575. A robust dendroid form, with the 

 branches nearly all attenuated to an extremely long decurved filiform 

 flagellum, which is itself frequently branched near the tip. This 

 gives the plant a very individual appearance, but structurally it 

 agrees quite well with the normal form. 



NECKERACEAE 



PILOTRICHELLA PROFUSICAULIS (C. M.) Par. 



Loc. 3,630 meters, No. 1307. Original specimens, in Herb. 

 Bescherelle, at the British Museum, leg. Meyer, agree quite well ; the 

 apical points of the leaves vary somewhat considerably in length, 

 and are usually longer in No. 1307 than in Meyer's specimens, but 

 are quite equalled by some of these, and there is no constancy as to 

 the character in individual plants. The yellowish, golden, or ruddy 

 color, and the rather Stout, obtuse branches are notable features of 

 this species. 



