Dr Grahaiirs Description of New o?' Rare Plants. 171 



beginning, and in the greenhouse of the Botanic Garden, Edinburgh, 

 in the middle of September. Plants were also exposed in the open bor- 

 der, and fiower-buda formed freely there, but too late in the season to be 

 expanded. If turned out earlier, it is possible we may see it forming a 

 noble addition to our half hardy plants. 

 It was upon Mr Don's authority that in the Botanical Magazine I gave to 

 this plant the MS. specific name of Sesse and Mocinno. The reasons sub- 

 sequently assigned by him (loc. cit.) for considering it a new species seem 

 perfectly conclusive. I however lind the pubescence always articulate. 



Michauxia laevigata. 



M. UBvigata ; caule elato, glaberrimo, nitido ; foliis duplicato-dentatis, 



hispidis, radicalibus ovatis longe petiolatis, caulinis sessiiibus oblongis, 



inferioribus base attenuatis, superioribus cordatis ; floribus decandris ; 



stigma, calycc, corollaque 10-partitis. 



Michauxia laevigata, Vent. Hort. Cels. p. 81. t. 81 — Persoon, Synop. 1. 



418 Sprengel, Syst. Veget. 2. 213. 



Michauxia decandra, Fischer^ MS. 

 Description — Root perennial, iy/em (11 feet high) herlMiceous, smooth, 

 shining, tapering, subsimple, upright, straight. Leaves sprinkled on 

 both sides with harsh erect hairs, duplicato-dentate, coarsely veined and 

 reticulate ; root-leaves ovate, decurrent along petioles longer than them- 

 selves, and on the upper part of which there are a few small pinnae ; 

 stem-leaves sessile, the lower ones oblong, and somewhat attenuated at 

 the base, higher up cordate, and more acute, and gradually passing into 

 cordate, acute bractece^ with reflected aculei on the margin and on the 

 back of the middle rib. Flowers scattered along nearly the whole length 

 of the stem, on short peduncles in the axils of the bracteae, expand in 

 succession, and slowly, from below upwards. Peduncles solitary, bearing 

 three flowers, of which the terminal only expands with us. Calt/x of 

 ten segments, which are acute, at first erect, afterwards spreading at 

 right angles, reflected in the sides, and fringed with reflected aculei, and 

 of ten other segments, which extend backwards along the pedicel, flat 

 and shorter, but in other respects similar to the first ten, and alternating 

 with them. Corolla white, much longer than the calyx, lO-parted, seg- 

 ments (1 inch long, 1 line broad) linear, revolute, reflected in their edges, 

 and ciliated with reflected aculei along the middle rib. Stamens 10; fi- 

 laments connivent, subulate, winged, wings reflected villous; anthers 

 as long as the filaments, linear, yellow, bursting along the sides ; pollen 

 yellow. Germen top-shaped, inferior, ribbed, lO-locular. Style stout, 

 straight, longer than the stamens, pubescent. Stigma 10-parted, revolute. 

 Ovules very numerous, attached to a large central receptacle. The whole 

 plant yields, on the slightest injury, a large quantity of milky juice. 

 Seeds of this plant, which is a native of the north of Persia, were commu- 

 nicated to the Botanic Garden, Edinburgh, by Dr Fischer in March 

 1829, and the same specimen has been in flower with us for about two 

 months after the middle of August. Even yet (16th October), the flowers 

 have not expanded much above half-way up the stem, and I have no 

 doubt it would have continued in blossom till the frost cut it down, but 

 for an injury which it has received. I had hoped to have received Ven- 

 tenat's work before this description was printed, but as t have not, the 

 identit}' of our plant with his may admit of some doubt ; but I cannot 

 believe that they are different. 



Phalangium longifoliiuD. 



P. longifolium ; raule simplice, folioso ; floribus laxe racemosis, nutanti- 



bus; pedunculis congestis, medio articulatis, bracteam acuminatam ae- 



quantibus ; petalis acutis ; filamentis medio tumidis ; foliis linearibus, 



glabris, denticulatis, caulem subaequantibus. 



Description — Root fascicled, drawn out into long fibres, swelling into 



oblong, white, villous tubers. Stem (24 feet high) simple, round, gla- 



