271 



Island of Madeira by my friend Mr. Lowe. They vary some- 

 what in size ; but, in all, the lower of the two leaves is very 

 large in proportion to the size of the plant, and is as large, 

 as orbicular, and as delicate in structure as those of the 

 Hahenaria orhiculata of North America. 



Tab. LV. Fig. 1, Plant : — naL size. Fig. 2, Flower and 

 bractea. Fig^ 3, Anther and stigma. Fig. 4, Labellum ; 

 more or less magnified. 



[TAB. LVL] 



ON A NEW SPECIES OF CASTELA; 



Communicated by Dr. Nicholson, from Antigua. 

 Dkecia Octandra. Nat Ord. Ochnace^. DC. 



Gen. Char, Cal. parvus, 4-fidus, Pet. 4, ovalia, concava, 

 patentia, dentibus calycinis alternantia. Masc: Stam* 

 8, disco hypogyno parvo inserta : Filam. filiformia : Anr 

 therm inversee. Pistillwn abortivum, niinutum. F^m,; 

 Stam. abgrtientia 8, filamentis brevibus. Pist. globosuni, 

 ofunde 4-lobum, disco hypogyno insertum : Stylus vix 

 lus: Stigmata 4, recurvata, basi unita. Dritpm 4, patentes, 

 lobis 4 o-erminis. demum liberis. Albumen tenue. Coty- 



P 



kdones foliacese. Radicula supera.— Planta valde amara. 



Castela Nicholsmi, {Hook. MSS.) foliis ellipticis mucronu- 

 latis subtus ramulisque incano-sericeis, spinis axillaribus, 



staminibus hirsutis. (Tab. LVI.) 

 Hab. In coUibus aridis calcareis Insular Antiguae, ubi Goat- 



fnish 

 Frntex 



Nicholson^ M. D 

 Caulis ramosissi- 



nius; rami patentes, spinis brevibus axillaribus arraati, 

 ramulis teretibus, incano-sericeis. Folia alterna, sparsa, 

 liic illic fasciculata, subsessilia, coriacea, elliptica, supra 

 nitida aeruginosa, subtus incano-sericea, marginibus re- 

 VQlutis, apiceque mucronata. JFlores parvi, crocei, dioici. 



T 



2 



