ME. G. BJiNTHAM 0>~ ORCHIDE^. 357 



chis, Thou., about twelve Mascarene and South-African species, 

 including AmphorcJiis, Thou, (at leasts, calcarata, Thou., which is 

 Cynorchis squamata, Lindl.), again generieally separated by Bluine, 

 but upon very slight grounds; Ilemipilia, Lindl., two East- 

 Indian species ; and Glossula, Lindl., a name needlessly altered 

 by Sprengel to Glossaspis, a single Chinese species. 



Subtribe 8. DlSl.fi. — The chief peculiarity of this subtribe 

 consists in the anther, which, although continuous with the eli- 

 nandrium as in the rest of Ophrydeas, is more or less turned back 

 from the top of the column. The large stigma, either concave or 

 convex and cushion-like, is either apparently terminal on the 

 column or in front of it immediately under the rostellum or at 

 the base of the column, and sometimes adnate to the labellum. 

 The eleven following genera are all African, chiefly southern or 

 Mascarene, one only (Satyrium) being also represented by a few 

 species in East India. This genus Satyrium, Sw. (Biplecth-um 

 Pers.),has about fifty species, readily known by the double spur of 

 the labellum, and should include Satyridium, Lindl., a single Cape 

 species supposed to differ by the very uncertain character of the 

 two glands of the pollinarium being united into a single one, and 

 probably also Aviceps, Lindl., which does not appear to be distinct 

 from Satyrium pumilum, Tlmnb. Pacliites, Lindl., is only known 

 from a single South-African specimen of Burchell's already passed 

 flower, and may prove not to be really distinct from Bisa. Bisa 

 Berg, now comprises about fifty species, distributed by Lindley or 

 by Beichenbach into twelve series or sections very unsatisfactorily 

 characterized. A mongst them, however, Trichochilia,w\th its grass- 

 like radical leaves and toothed or fringed labellum, and Bisella 

 with its close spike of small flowers, might perhaps be retained 

 as good sections. B. yraminifolia, Sw., forming Lindley's genus 

 Jlerschelia, has the habit and characters of Trichochilia, except 

 that the labellum is scarcely, if at all, toothed. Monadenia 

 Lindl., about twelve species, is distinguished from Bisa by the laro-e 

 membranous somewhat folded rostellum, and by the two gland h 

 of the pollinarium united into one; the latter character how- 

 ever, has been traced by Bolus in species of true Bisa; and Gene- 

 rally the distinction between Bisa and its nearest allies can 

 scarcely be settled without a study of the living plants. TV 

 Mr. Bolus has been carrying on in South Africa ; and we hope 

 to receive from him the results of his investigations before we 

 send the Orchidefe of our ' Genera Plantarum ' to press. Sch '- 



y 



