91 REPORT ON TWO BOTANICAL COLLECTIONS FEOM 



carry away the spores, they are a better indication than plnenogamic plants as to the 

 Flora we must regard as the remnant of another, which, like that of South America, 

 once covered a wide area, and is now separated by intermediate barren plains or tree- 

 less Llanos and Pampas of enormous extension where no Liverworts can live. 



That the spores are not able to propagate a Liverwort beyond, perhaps, a small area, 

 no better example can show than the very interesting flora of Killamey, where — doubtless 

 for many centuries — a few species of Hepaticre of tropical origin have been preserved 

 without being able to reach the Continent. 



The present condition of the literature of Liverworts seldom allows one to make 

 geographical speculations ; but when my " Species Hepaticarum " is finished, and the 

 number and relation of known liverworts, as also their distribution, settled, we may 

 be able to draw conclusions which, I think, will be of value to all who study the 

 geographical distribution of plants. 



The following Liverworts have been collected, viz. : — 



A. Anackogyxi, 



1. Dumortiera hirsuta, Nees, Hep. Eur. iv. p. 163. Marchcmtia hirsuta, Sw. Prodr. 



El. Ind. Occ. p. 145. 

 Boraima, Ledge, 7500-8000 ft., McConnell A'- Quelch, 334/0. 

 Common in Tropical and Subtropical America, England, Italy, Africa. 



2. Aneura Schwaneckei, Steph. in Hedwigia xxvii. (1888), p. 278. 

 Summit of Boraima, McConnell A'- Quelch, 512. 



Eound also in the West-Indian Islands. 



3. Aneura algoides, Steph. in Bull. Herb. Boiss. vii. (1809), p. 682. Metzgeria algoides, 



Taylor, in Hook. Lond. Journ. Bot. v. (1810), p. 410. 

 Summit of Roraima, McConnell A - (Quelch, 529. 

 An Andine plant, collected by Jameson near Quito. 



4. Aneura roraimensis, Steph., n. sp. Dioica, minor, pallide olivacea, aliis hepaticis 



consociata. From ad 5 mm. longa, exalata, irregulariter bipirmata, ssepe subfasci- 

 culata. Trnueus primarius angustus, biconvexus, ramis trunco latioribus minus 

 convexis. Cuticula ubique lamellata, lamellis denticulatis margine bene prominulis. 

 Cellules frondis interna' corticalibus multo majores, fronde in adspectu itaque 

 optime reticidata. Rami feminei in trunco solitarii, breves, margine latissime 

 alati, alis profunde inciso-lobatis, lobis lanceolatis vel ligulatis obtusis, squama 

 basali similiter lobata ramulum $ a tergo tegente. Reliqua desunt. 

 A very good and most distinct species, easily to be recognized by the rough cuticula of 

 the cortical cells. 



In the monograph of the genus Aneura (• Species Hepticarum,' p. 736) it is to be placed 

 after No. 81, Aneura scabra, Steph. 



Summit of Boraima, McConnell §f Quelch, 350. Mixed with Micro [iteryg 'turn 

 pterygophyllum, Spruce. 



