240 Retrospective Criticism. 



was presented to the Glasgow Botanic Garden by - — Pearson, Esq. ; who had brought it from 



the neighbourhood of Rio Janeiro, in Brazil, where it is a native." \Bot. Mag., April.) A. aulica 



itself, and all varieties of it, are, when in flower, superb plants. 

 935. ISME N N£ 7642 Amaneaes 



2 sulphurea Herb, sulphureous -flmd. t El or 3 ... Su Eng. hybrid 1829. O s.p Bot. reg. 1665 

 It has been originated from a seed of Ismene Amaneaes which had been fertilised by the pollen of 



I. calathlna Herbert. [In Hort. Brit., the neuter adjective calathinum is wrongly associated with 



Ismene, instead of the feminine calathlna.] 



A very ornamental hybrid ; and interesting, in evidencing the great change 

 which has been wrought by the impression of' the male species. The colour 

 of the flower is intermediate ; and the scent, though powerful, is not delight- 

 fully fragrant as in calathina, nor so disagreeable as that of Amaneaes. The 

 constitution is vigorous, like that of the former species ; from which it 

 also inherits a more robust stature and less attenuated leaves. (Herbert in 

 Bot. Beg., April.) 



CCXL. Qrchidece. 



2530 CATASETUM. 



luridum LindU lur'iA-flwd. £ El or 1 s.n G.Y.Br Brazil 1832. D r.w.lpotsh Bot. reg. 1667 



Although it cannot be compared for beauty with Catasetum tridentatum, it 

 is, nevertheless, an interesting species. The spots en the lip are of the 

 deepest and richest ruddy brown ; while the horns of the column may be 

 compared to the fore legs of some spider, lurking in the bosom of the flower 

 to seize upon the victims that may enter it. Plants of this species are pos- 

 sessed by Messrs. Loddiges, Mr. Knight, Mr. Bateman, and the London 

 Horticultural Society. 



CCLI. AAliacecd. 



3337. CYCLOBO'THRA Swt. (Kyklos, a circle, bothros, a pit ; a circular depression, which is 



nectariferous, in each petal.) 6. 1. Sp. 5.— 



Ititea Lindl yettow-petaled tf .AJ or 1| au.s Y Mexico 1827. O p.l Bot. reg. 1663 



C. barbata Swt. in Brit. Flow.-Gard. 1. s. 273., Loudon's Hort Brit. No. 28170., where the synonyme 

 Fritillaria barbata Kth. should, according to what follows, be cancelled. 



" When this plant was first introduced, it was supposed to be the same as the Fritillaria barbata 

 v published in M. Kunth's account of the plants discovered by Humboldt and Bonpland ; but we 

 learn, from the last volume of Romer and Schultes, that that species has a bearded horseshoe mark 

 on its sepals, no trace of which can be found in the plant now figured. We are, therefore, unwill- 

 ingly obliged to amend the name by which this has hitherto been known : a name which would 

 be untenable even if Fritillaria barbata were the same plant, because it [expressive of the bearded 

 inward face of the petals] is equally applicable to every species of the genus. {Bot. Reg., April.) 



Cyclobothra alba and pulch£Ua, described in our last, in p. 179., are figured in the Bot. Beg. for 

 April; C. pulchella Bot. Beg. 1662. ; C. alba Bot. Beg. 1661. In Bot. Meg. 1662., a synopsis of the 

 known species of the genus is supplied, which are shown to be nine in number; but only four, or 

 at most five, of these have been yet introduced (alive) into Britain. 



CCLVI. Aroidece. 



2672. CALA y DIUM. [Bot. mag. 3314 



23489a fragrantissimum Hook, most fragrant .£ fl_ □ * ? fra fc Crea.R Demerara 1832? C s.p 



Introduced from Demerara, to the Liverpool Botanic Garden, by C. S 

 Parker, Esq. It is a species with an extending rooting stem ; petiole 2 ft. or 

 more long ; expansion of the leaf 1§ ft. to 2 ft. long, oblongo-cordate. Spathe 

 almost 9 in. long, cream-coloured, in its lower part richly tinged with red. 

 " The whole inflorescence yields a fragrance, which I [Dr. Hooker] can only 

 compare with that of the Olea fragrans, but far more powerful." (Bot. Mag., 

 April.) 



Art. V. Retrospective Criticism. 



Correction. — In " hedges of yew are of low growth," in p. 185., lines 14. 

 and 15., for " low " read " slow." 



Decandolle' s Theory of the Botalion of Crops. — In the February Number 

 of the Gardener's Magazine is an article entitled an " Investigation of the 

 theory of the rotation of crops ; by the author of the Domestic Gardener's 

 Manual ;" a very interesting subject to the gardener and vegetable physio- 

 logist. The writer seems to claim at least a share of priority in the discovery 

 of what is termed " De Candolle's theory ; " assuming that trees and plants 

 emit exerementitious matter into the soil, hurtful to some and favourable to 

 the growth of other plants. In the progress of scientific knowledge, it is not 



