'1^ Graham's i?«i^''o)'7?oip-e'J^/rtn)^. 



'^^■gjipsian by the influence of veins of quartz, which presents 

 fW^^ analogy to the mode of formation of dolomites by the iu- 

 fluence of black porphyries, a phenomenon pointed out a long 

 time ago by Von Buch in his beautiful memou's on the subject. 

 At St Christophe we have another fact, viz. the intimate 

 union, without any intermediate rock, of granite, the most an- 

 cient Plutonic rock, with the lias, a Neptunian rock, filled with 

 marine shells. Facts of this kind, whose cause was unknown, 

 have often been cited, to prove that the granite was of the 

 game epoch as the Jurassic formation. What I have now 

 stated, proves that observers may be deceived in this respect. 

 (Comptes Bendus de P Academic des Sciences). 



i'.-l /I'jjjjlli! J:.', 



Description of several New or Hare Plants which have lately 



, Flowered in the Neighbourhood of Edinburgh, and chiefly 



^.__.Jn the Boyal Botanic Garden. By Dr Graham, Professor 



of Botany. '! 



lOf A iJfarcA 184(if., 

 Bouvardia splendens. 



B. splendens ; foliis ternis, raro oppositis, lanceolatis, acuminatis, utrin- 

 que scabris ; stipulis lacineato-subulatis ; ramis trigonis subglabris ; 

 8ty]o exserto; corolla; tubo intus bju'bato. 

 Bouvardia splendens, Bot. Mag. 3781. 



Description. — Shrub with long, slender, diffused branches, grey and 

 cracked when matui-ed, when young trigonous, subglabrous, coloured 

 on their upper side, green on the lower. Stipules subulate, occasionally 

 cut, elongated, adpressed. Leaves ternate, rarely opposite, lanceolate, 

 acuminate, strongly veined, scabrous on both sides, bright green above, 

 pale below. Cori/mbs terminal, M-ith throe lateral branches and a lead- 

 ing stalk, -which is once or oftcner divided in a similar way. C'ali/x 

 gieen, slightly scabrous : tube adherent ; limb 4.-partod, segments subu- 

 late, diverging, and having minute intervening teeth. Corollu of uni- 

 form very brigiit vermilion colour, acquiring a faint lake tint, slightly 

 scabrous ; tube of equal diameter above and below, bluntly 4-angled, 

 nearly five times longer tlian tlio calyx, bearded near its base within ; 

 limb 4-parled, segments ovate, .spreading, subacute. Stamens foui-, in- 

 cluded ; anthers sessile, attached by their middle to the corolla at about 

 throe-fourths of its height; pollen yellow. StUjma bifid, fleshy, glandu- 

 lar, segments oblong, slightly divai-icated .at the apex. Stt/lc central, fi- 

 liform, glabrous, exsertod at the apex. Germcii inferior, bilocular, 

 shortly elliptical or obovate, compressed ; placentte large, central ; ovules 

 numerous, imbricated, winged all round, resembling concave scales. 



There is no doubt great siiiiilarity between this and the Jiourardia triphylla 

 of Botanical Mag.izinc, but its freer growth, the much greater splendour 

 Q(i it8VcfijftU\on (^yljjur, the ixarrower, more laaccolate, more acununate, 

 TOL. XXVIIl. NO. IVI. APRIL 1840. ^ '^ U d 



