RECENT ADDITIONS TO THE BRITISH LICHEN-FLORA. 271 



l-12th in. long, the old ones denticulate. Peduncles 2-4 to a 

 rosette, as long as or rather longer than the leaves, scabrous, with 

 sessile black glands in the upper half. Ovary cylindrical, i in. 

 long, rugose, with crowded black sessile glands, without any 

 bristles. Perianth- segments lanceolate, tinged with lilac, |-| in. 

 long. Anthers linear, -| in. long, yellow ; filaments very short. 

 Fruit oblong, 3-lobed, with numerous small seeds in each cell. — 

 Eocky ground in Betsileo-land, flowering from November to 

 January. Native name Rosana. Nearly allied to X. dasylirioides, 

 Baker, in Journ. Bot., 1875, p. 235, a species gathered byBojer 

 in the mountains of the province of Imerina. 



Xerophyta sessiliflora, n. sp. — A much-branched shrub, about 

 a foot high, with terete woody stems ^-^ in. diam., clasped by the 

 truncate adpressed bases of the old leaves, the flat unciliated ribs 

 of which have narrow hoUow^s between them. Produced leaves 

 6-10 in a lax rosette, spreading or reflexed, linear, rigid in texture, 

 about an inch long, with a tuft of white fibres in the axils, tapering 

 to a point, acutely channelled down the face, bordered on the 

 edges and keel beneath with small ascending spines like those of a 

 Pandanus. Flowers solitary, sessile at the end of the branchlets. 

 Ovary cylmdrical, -g- in. long, with a few black sessile glands. 

 Perianth-segments lanceolate, |- in. long. Anthers ^ in. long, 

 nearly sessile. Capsule subglobose, ^ in. long, with a few black 

 glands. — Eocky ground in the Betsileo-country, flowermg from 

 November to January, Baron 13 ! Native name Hosana, like the 

 other species. 



Lycopodium strictum, n. sp. — Stems pendulous, flexuose, 

 forked, about a foot long. Leaves alternate, quadrifarious, sessile, 

 ascending, much imbricated, oblong, l-5th to l-4th in. long, obtuse, 

 thick and firm in texture, the midiib quite hidden. Spikes sessile, 

 terminal, 2-3 in. long, 2-3 times dichotomously forked, square, 

 1 lin. diam. ; bracts suborbicular, obtuse, slightly imbricated, 

 about as long as the sporangia. — Central Madagascar, Dr. Parker ! 

 A near ally of L. gnidioides, L. 



EECENT ADDITIONS TO THE BEITISH LICHEN-FLOEA. 

 By the Eev. J. M. Crombie, F.L.S. 



Since the publication of the last edition of Leighton's ' Lichen- 

 Flora of Great Britain' (1879), the following species and varieties 

 (exclusive of Cladoniei) have now to be added to our already 

 extensive Lichen-Flora. With the exception of those of which the 

 diagnoses are here given, the numerous new species and varieties 

 have been recorded by me from time to time in ' Grevillea.' 



Pyrenopds suhareulata, Nyl. — On schistose rocks. Barmouth, 

 N. Wales (Dr. Holl). A somewhat atypical state. 



Lichiniza Ketuiwrensis, (Holl), Nyl., in Flora, 1881, p. 6, gen. & 

 sp. n. — On micaceo-schistose boulders. Shores of Loch Tay, 



