190 Dr Graham''s List of Rare Plants. 



and especially A. vernicifluaj now in flower at the Botanic Garden, both 

 in the greenhouse and upon the open wall 

 The specific name is descriptive of its drooping branches, and its dull green 

 colour, compared with its nearest allies, but was first suggested by cir- 

 cumstances entirely personal, under which I write the description. 



Cereus Napoleonis. 



C. Napoleonis ; ramis diffusis, repentibus, triangularibus, rarissime arti- 

 culatis, repandis, tuberculis 4-5-spinosis, spinis rigidis paten tibus. 



Cactus Napoleonis, Hort. 



Cereus triangularis, var. major. Salm-Dyck — Otto, Allgemeine Gartenzei- 

 tung, 1833. 



Description — Stem much branched, branches diffused, rooting, very dis- 

 tantly jointed, light green, with three acute angles, and concave sides, 

 angles tubercled, tubercles distant about 1 1 inches, the intervening space 

 being slightly repand, tubercles with 4-5 rigid stellate prickles (about 

 4J lines long), having tumid bases. Flower (8 inches long, and, when 

 fully expanded, 6 inches across) ascending, tube (3 inches long, 10 lines 

 broad) green, furrowed, with rounded ridges between, having a few tri- 

 angular subappressed, deep red scales, gradually enlarging upwards, and 

 passing into the straw-coloured lanceolato-linear outer segments of the 

 perianth^ the inner segments of which are pure white, somewhat shorter, 

 broader, spathulato-lanceolate, and crenate at the apex. Stamens nume- 

 rous, yellow, declined, ascending at the apex, shorter than the perianth ; 

 anthers erect, small. Pistil subexserted ; stigma yellow, raultifid, seg- 

 ments subulate, spreading from their middle; style stout, cylindrical, 

 ascending. 



We received this plant from Mr Mackay at Clapton about ten years ago. 

 It has repeatedly formed buds, but no flowers have expanded till now 

 (September 1835). The flower expanded in* the morning, and closed to- 

 wards the afternoon, is very like to that of C. grandijlorus, and is slightly, 

 not very agreeably, perfumed. The far greater length of its joints, 

 their different form, and the shape of the edge between the tubercles, 

 prevent me from considering it a variety of C. triangularis, 



Cypella Drummondii. 



C. Drummondii ; foliis ensiformibus, plicatis ; laciniis corollae exterioribus 

 obcordatis, interioribus naviculatis medio compressis, apice crenulatis ; 

 laciniis pistilli bifidis subulatis ; caule terete, foliis longioribus. 

 Description — Tubers fascicled, obconical, terminating in long apices, 

 which pass into fibrous roots. Stem erect, round, flexuose, leafy, joints 

 swollen. Leaves ensiform, plicate, distichous, shorter than the stem, 

 sheathing at the base. Spathe 2-flowered, with an interposed lanceolate 

 bractea, bivalvular; valves herbaceous, acute, unequal, the outer the 

 smaller. Pedicels erect, bent at a right angle below the flower, shorter 

 than the longer valve. Perianth rotate, 6-partite, purple, yellow, with 

 brown spots in the centre, the outer segments broad, obcordate, with a 

 small hairy point in the sinuosity, everywhere else glabrous; inner seg- 

 ments rather more than half the length of the outer, naviculate, crenulate 

 at the apex, compressed laterally in the middle, and there bright yellow, 

 with a few purple spots. Stamens erect, opposite to the outer segments 

 of the perianth ; filaments very short ; anthers erect, lobes divaricated 

 at both extremities, connective broad, thin, refuse, and broadest in the 

 upper edge ; pollen green, granules minute, oblong. Pistil longer than 

 the stamens ; stigmata 3, bifid, segments subulate, reflected ; style tri- 

 quetrous, enlarging towards the stigma ; germen green, 3-sided, inferior. 

 Bulbs of this very pretty species were received at the Botanic Garden, 

 by Dr Neill at Canonmills, and by IMr Cunningham in the nursery, 

 Comely Bank, from Mr Drummond in 1834. They were gathered at San 

 Filipe. The plant flowered in the stove, in all these establishments, in 

 July 1835. 



