100 EEPOET OX TWO BOTANICAL COLLECTIONS FROM 



35. Scapania portoricensis, Ilampe & Gottsche, in Linnsea, xxv. (1852), p. 342. 

 Summit of Roraima, McGonnell 8f Quelch, 573. 



Not rare in the West Indian Islands, and found by Spruce also on the top of Mount 

 Abitagua, 2000 m. (his Scapania splendkla). 



36. Pleurozia paraloxa, Steph., n. nomen. — Physiotivmi paradoxiim, J. B. Jack, in 



Hedwigia, xxvii. (1880), p. 85. 

 Summit of Roraima, McGonnell 8f Quelch, 543. 

 Known before from Pasto, collected by P. C. Lehmann. 



37. Harpalejeunea tenax, Steph., n. sp. Sterilis, minor, fusco-olivacea, rigida, 



dense caespitosa. Caulis ad 15 mm. longus, capillaceus, parum ramosus. Folia 

 remotiuscula, caule vix latiora, parum patula, cauli fere parallela, valde concava, in 

 piano cordiformia, tertio supero abrupte angustata acuminata acuta vix incurva, 

 lobulo duplo angustiore, valde inflato, in acumen folii attenuate Cellules foliorum 

 parvse, ad 12 p, trigonis late confluentibus. Amphigastria parva, transverse inserta, 

 caulem vix superantia subrotunda, appressa, integerrima. 

 Roraima, Ledge, 7500-8000 ft., McCoimell 8f Quelch, 334/. 



A much reduced form, rigid and evidently well adapted to a dry climate, the leaves 

 being very small, little projecting from the stem, the cell-walls very thick. This plant 

 is almost unique in the great number of species of Lejeunea, which always live in damp 

 and well sheltered places, and disappear where a dry atmosphere can reach them. 



38. Prullania mirabilrs, J. B. Jack & Steph. in lledwigia, xxxi. (1892), p. 15. 

 Summit of Mount Roraima, 3IcConnell Sf Quelch, 510. 



Collected before by Wallis in New Granada, near Antioquia. 



39. Prullania atrata, Nees, in Syn. Hep. p. 163. Jititgermcmnia at rata, Sw. Prodi*. 



Fl. Ind. Occ. p. 144. 

 Summit of Roraima, JlcC'oi/uell 8f Quelch, 535. 

 Very common in Tropical America. 



40. Prullania longicollis, Lindenb. & Gottsche, in Syn. Hep. p. 783. 

 Summit of Roraima, JlcCoiniell 8f Quelch, 335. 



An Andine species, found also in Mexico. 



