ABSTRACTS. 



748 



twenty-five species, as well as varieties and hybrids of Ribcs. An opinion 

 previously expressed by the author is confirmed, that the appearance and 

 development of spores and sori of the fungus, and the spots on the leaves 

 are to be traced to the physical and chemical nature of the substratum. 

 On this account the author protests against the recent tendency to create 

 and multiply biological species which cannot be distinguished by morpho- 

 logical characters. Such species only differ because they are adapted to 

 different host-plants. — W. G. S. 



Cycas circinalis, L., Monstrous Fronds of. By C. Sprenger 

 (Bull. B. Soc. Tosc. Ort. viii. p. 242 ; August 1902). — The plant came from 

 Pfister, of Naples. The monstrous frond was otherwise in a perfect 

 condition of health. The lowermost leaflets are perfect, but not always 

 opposite, falcate, and, save a few, regular. Some on the right side of the 

 rachis are strangely turned over either to the lower or the upper side, 

 crisped and undulate, as if they had been interfered with before expansion. 

 The right side possesses sixteen leaflets, the left only thirteen. Higher 

 up the rachis is devoid of these leaflets, and there a union of great 

 numbers of associated leaflets, both on the right and left sides, forms a 

 kind of boat which from the opposite side looks like a monstrous shel), 

 fringed and incised at the apex and strangely coloured, as if it had all been 

 varnished below. In another case the terminal leaflet was trifid, as if 

 formed of three united together.— W. C. W. 



Cyclamen COlchieum. By H. Gebhardt (Die Gart. p. 474 ; 

 5/7/1902). — A new species or form from the Caucasus, resembling our 

 V. curopcviun ; in colour variable, it has the delicate scent of C. euro- 

 pceum, and is autumn-flowering, the same as the former. — G. B. 



Cymbidium rhodochilum. By R. A. Rolfe (Orch. Bev. p. 184 ; 

 June 1902). — Interesting and historical particulars of this rare species 

 are given. — H. J. C. 



Cynanchum prsecox, Schlechter. By Spencer Le M. Moore 

 (Journ. Bot. 475, p. 256; 7/1902). — Description of a new species of 

 Asclepiad collected by Dr. Rand in the district of Salisbury, Rhodesia, 

 and provisionally named by Mr. Schlechter, from specimens in the 

 National Herbarium. — G. S. B. 



Cynometra and Maniltoa, New Species of. By H. Harms (Not. 

 Konig. Bot. Berlin, vol. iii. (1902), p. 186).— Harms describes a number 

 of new species of the genera Cynometra, L., and Maniltoa, Scheff., viz. 

 C. Schumanniana, Harms, from New Guinea ; C. simplicifolia, Harms, 

 from the Philippines ; C. Warburgii, Harms, from N. Luzon ; M. Schefferi, 

 K. Schum, from New Guinea ; M. Hollrungii, Harms, from New Guinea ; 

 M. browneoides, Harms, from S.E. Java (?), Scc.—H. M. W. 



Cynorchis purpurascens. By Sir J. D. Hooker (Bot. Mag. tab. 

 7,852). — Nat. ord. Orchidece, tribe Ophrydece. Native of the Mascarene 

 Islands. Flowers many in a globose head ; perianth 1\ inch broad ; rose- 

 coloured labellum and paler petals. — G. H. 



