NOTICES OF BOOKS AND MEMOIRS. 219 



X. SQUARROSA, Baker. — Angola. (Trans. Linn. Soc, 2, i., p. 264.) 

 X. STENOPHYLLA, Baker. — Angola. (Trans. Linn. Soc, 2, i., 



p. 265.) 



X. VELUTiNA, Baker. — Angola. (Trans. Linn. Soc, 2, i., p. 265.) 

 Zamia ? AMPLiFOLiA, Hort. Bull (Cycadeae). — (Gard. Cliron., pt. ii., 



p. 810.) 



Zygopetalum obtusatum, Fichh. f. (OrchideaB) — (Gard. Chron., 



pt. ii., p. 300.) 



The Royal Society has issued a thick extra volume of the 

 'Philosophical Transactions' (vol. 168), containing a full account 

 of the collections, petiological, botanical and zoological, made 

 during the Transit of Venus expedition of 1874-75, in Kerguelen 

 Island and Rodriguez. We have already alluded (p. 122) to the 

 portion devoted to the Botany of the latter island. The plants of 

 Kerguelen, though few in number, are of great interest. This 

 large area, eighty miles long by seventy wide, is probably the most 

 barren tract on the face of the globe, and possesses the poorest 

 flora. Sir J. D. Hooker gives a complete list of the Phanerogams, 

 Ferns, &c., now known in the island. Altogether there are only 

 21 of the former and 7 of the latter; the only new species is 

 Ranwicuhis Moseleyi, Hk. f. This more complete knowledge of the 

 Kerguelen Phanerogamic Flora has strengthened its previously- 

 recognised affinity with that of Fuegia. Its constituents may be 

 thus classified : — one endemic genus (Princjlea) with no near ally, 

 one endemic genus allied to Pycnoplnjllum, an Andean one (Lyallia), 

 six endemic species allied to American congeners [Banuncidus 

 crassipes and Moseleyi, Colohanthus kerguelensis, Acmia ajfinis, Poa 

 Cookii, Festuca kerguelensis), five species common to Fuegia but 

 not found elsewhere [Banuncidus tenuifolius, Azorella Selago, 

 Galium antarcticum, Festuca erecta, Descliampsia antarctica), six 

 species common to America and also to New Zealand and the 

 islands south of it, many very widely dispersed {THla;a vioschata, 

 Montia fontana, CaUitriche ohtusangula, Limosella aquatica, Juncus 

 scheuzerioides, Agrostis magellanica), two s^Decies found elsewhere but 

 not in Fuegia (Cotida plumosa, Lord Auckland's Grouj) and 

 Campbell's Island south of New Zealand; Uncinia compacta, 

 Tasmania and New Zealand). There are 74 Mosses, 25 

 Hepaticae, 61 Lichens, 71 marme and 106 fresh-water Algae, 

 and 10 Fungi enumerated; these also strongly support the 

 American affinity. Five plates illustrate the Memou', two 

 devoted to Phanerogams and three to Cryptogams. , The flowers 

 of the curious Lyallia are figured, and corroborate its position 

 in the Caryophylleas ; -•' there are also figures of the different 

 forms of flower (apetalous, uni- and tri-petalous) of Pringlea. 



* From the similarity of habit and foliage, and in the absence of flowers, 

 Anderson, the surgeon to Cooks third voyage, who first collected this plant, 

 placed it in the same genus as Azorella Selago, both being species of his Cookia, 

 un unpublished genus dedicated to the illustrious navigator. 



