314 HEPATics (Stephani). [Lophocolea 



14. LOPHOCOLEA Dumort. Rec. d'Observ. p. 17 (1835). 



1. L. Dusenii Steph. in Hepat. Afric. in Camerunia a P. Dusen 

 collectse exsicc, sched. No. 247 (nomen). 



Monoicous. Plant rather small, green or pale-green, densely 

 stratified, corticolous. Stem up to 2 cm. long, sparingly branched. 

 Leaves suLopposite, distichously patulous, oblongo-conical, with 

 margins straight, at apex not half as wide as at base, at apex 

 Innately excised, bispinose, the spines being short and nearly of 

 equal size and narrowly triangulate. Leaf-cells 28 /a, at base 28 

 by 37 fx; trigones minute. Amphigastria three times as wide 

 as the stem, widely Innately excised, on each side bispinose and 

 broadly united with the leaves. Perianths terminal, i.e. not 

 liorne on innovations, oblongo-triquetrous, at apex deeply multi- 

 laciniate, broadly winged, the wings being irregularly and grossly 

 spinose. Innermost lioral leaves little larger than the cauline, 

 at apex truncato-bidentulous, with margins paucidenticulate. 

 Innermost floral amphigastrium small, broadly corniate with its 

 proper leaves, subquadrate, quadrilaciniate to half its length, the 

 innermost lacinire being the stouter. Androecia terminal on the 

 branches, fusiform ; bracts exciso-bifidulous to one-third of their 

 length and inflatedly lobulate on the postical side, the lobules 

 being united with the amphigastrium. 



The original specimen was gathered on the Cameroon mountains 

 above the village of Buea at an elevation of about 5200 ft., on 

 the trunks of trees; 13 July 1891 (Dusen No. 247). 



Puxiio AxDOXGo. — Not uncommon in shady Jfimosa-vfoods by 

 rivulets near Pedras de Guinga ; March 1857. No. 230. Mixed with 

 tufts of mosses in moist clefts of rocks within the praesidiuin; May 

 1857. No. 235. 



GroLUNGO Alto. — Quisucula, April 1856. No. 277. Widely csespi- 

 tose on schistose rocks on the mountains of Alta Queta; March 1859. 

 No. 294. Among mosses (Ectropothecium, etc.), in Mata de Quisuculo ; 

 Jan. 1850. No. 311. 



15. PLAGIOCHILA Dumort. Rec. d'Observ. p. 14 (1835). 

 1. P. amplifolia Steph. sp. n. 



Sterile, rather large, robust, densely depresso-csespitose, yellowish- 

 green, corticolous. Stem straight, hard, fuscous, up to 3 cm. 

 long, at the top sparingly branched. Leaves fragile, crowded, 

 imbricate, curvately patulous, ovate when flattened, truncate at 

 apex, on the antical side a little decurrent, on the postical side 

 from the very base rotundato-ampliate and very prominently 

 cristate; margin everywhere remotely dentate, the teeth being 

 short and widely triangulate. Cells 25 /a, at base 17 by 34 /x; 

 trigones rather large. The other parts of the plant are wanting. 



The original specimen was gathered by Quintas in St. Thomas's 

 Island. The species is to be compared with P. ahjssmica Mitt. 



PuNGO Andongo. — Barrancos de Catete; Dec. 1856. No. 247- 

 Goi.UNGO Alto. — Without locality : probably Cungulungulo; Feb. 

 or June 1855. No. 276. 



