NO. 8 UGANDA MOSSES — DIXON 7 



longiusculum rigidiusculum excurrens. Folia stipuliformia multo 

 minora, late triangulari-hastata, subdenticulata, costa valida in 

 aristam strictam crassam aequilongam excurrens. Seta tenuiuscula, 

 2.5-2.75 cm. longa, theca (operculata) 4-5 mm. longa. Operculum 

 curvirostratum, circa 1/3 thecae longitudinem aequans. 



Hab. : Tree trunk in forest, Kipayo, alt. 4,000 ft., Aug., 1914, 

 Diimmer 984; c. fr. 



The large-celled leaves with a more or less distinct border separate 

 this from all the other African species. R. macrocarpum Broth, has 

 a longer seta and rather longer (5 mm.) capsule. The capsules here 

 are not quite mature, so that their ultimate form and direction is 

 uncertain. 



RHACOPILUM UGANDAE Broth. & Dixon, sp. nov. 



R. Buttneri Broth, affine. Species nostra differt foliis apicem 

 versus argutius serrulatis, cellulis (papillosis) paullo minoribus, 

 brcvioribus, 13-16 /x longis, 8 fi latis, foliis stipuliformibus valde 

 crasse longe cuspidatis, foliis perichaetialibus marginibus dcnticu- 

 latis; seta circa 2 cm. longa, theca (nee perfecte matura) inclinata, 

 5-7 mm. longa, operculo breviter rostrato sen rostcllato, vix 1/3 

 thecae longitudinem a e quant e. 



Hab.: Trunk of tree in forest, Kampala, Kyagwe Prov., Nov.. 

 191 3, R. Diimmer. Type in my herbarium. 



Although scarcely differing vegetatively from R. Buttneri, the 

 fruiting characters give adequate if not striking differences, as noted 

 above. The seta in that species is 2.5 cm., the capsule only 2.5 to 

 4 mm. long, the lid with a beak half the length of the capsule, the 

 perichaetial leaves entire. R. crassicus pidatum Corb. & Ther., which 

 it resembles in the long, stout arista of the stipular leaves, has these 

 not cordate or hastate at the base, while the leaf cells are smooth. 

 R. speluncae has much larger stipular leaves ; R. macrocarpum Broth, 

 has more serrulate stipular leaves, entire perichaetial leaves, longer 

 seta, and rather shorter capsule. 



LESKEACEAE 

 LINDBERGIA PATENTIFOLIA Dixon, sp. nov. 



Autoica. Caespites densi, saturate virides ; caulis pro genere sat 

 robustus, strictiusculus, irregulariter pinnato-ramosus, rami sicci 

 valde teretes, julacei, obtusi. Folia valde conferta, madida horizon- 

 taliter patentia, apice saepius leniter sursum incurvo, sicca arete 



