47 



present time, we have met with little or no success ; the 

 peculiarity of habit being accompanied wdth almost no differ- 

 ences in the structure of the flowers. Indeed, it is not an easy 

 matter to say how Bolbophyllum and Cirrhopetalum are to 

 be strictly defined. 



Under these circumstances, we think the most useful 

 course to be taken will be to collect the species into groups, 

 which shall be so limited as to bring together no species that 

 do not quite correspond in habit ; and then it is to be hoped 

 that the arrangement will be but little disturbed, in case 

 distinctions good enough for genera should be hereafter made 

 out. In doing this I shall endeavour to observe as nearly as 

 possible the course already taken by Blume, whose plants, 

 however, I have never had the advantage of examining-. 



Among the crowd of species which constitute this genus, 

 there is a large set, of which D. Pierardi may be taken as 

 the example, all which have thin flat leaves, slender stems, 

 and flowers growing uniformly in pairs from the sides of the 

 stem opposite the leaves. They may be regarded as consti- 

 tuting Dendrobium proper, and therefore the first step will 

 be to place them in one group, of which the following is the 

 enumeration. 



Sect. 1. EuDENDROBiUM. Stems slender; Leaves, thin 

 and fiat; Flowers in pairsj or threes, opposite the leaves. 

 (Grastidium Blume.) 



A. Lip undivided. 



1. D. macrophyllum (Lindl. in Bot. Reg. 1839. p. SQ. Sertutn 



Orchidaceum, t. 35. Dendrobium macranthum, Bot. Mag. 

 t. 3970) ; caulibus pendulis, foliis ovato-oblongis obtusis 

 nervosis basi subcordatis, sepalis lanceolatis lateralibus 

 parum productis, petalis oblongis acutis, labello pubes- 

 cente convoluto denticulato subunguiculato ovato callo 



baseos elevato transverso obsolete trilobo. Manilla. 



This is one of the handsomest species. The flowers 



are nine inches in circumference. The sepals and petals 

 are a clear and bright rose-colour, the lip is downy and 

 deeply stained with two large broad blood-red blotches 

 at its base. 



2. D. moniliforme (Fu Han, Ksempf. amoen. t. 865. Fpi- 



dendrum moniliforme, Linn. sp. pi. 1352. Dendrobium 

 moniliforme y Swartz act. Holm. 1800. p. 246. Willd. 



