Dr Graham's Descriptimi of New or Rare Plants. 379 



nientous, and smooth, except for a little way at the bottom, inserted in- 

 to the back of the anthers, which are short, smooth, oval, bilobular, 

 green, bursting laterally, after which they are reflected, and become 

 brown ; j)ollen nearly white. Germen bilocular, green, conical, tetra- 

 valvular, surrounded at its base by a glabrous, shining, tumid disk, 

 of a deep orange colour, sutures marked by a deep green line. Style fi- 

 liform, equal in length to the shortest stamen. Stigma deep green, cleft, 

 segments short, blunt, revolute. Ovuies very numerous, fixed to a cen- 

 tral receptacle, whose transverse section is kidney -shaj)ed in each locu- 

 lament. The whole plant, excluding only the pistil, the upper part of 

 the stamens, and the inside of the corolla, is covered with a glutinous 

 pubescence, which is most harsh and least glutinous upon the leaves. 

 The plant was raised in the Royal Botanic Garden, Edinburgh, in 1828, 

 from seed transmitted to us from Mendoza by Dr Gillies. It will no 

 doubt attain a much larger size with more pot room, or in the open bor- 

 der ; but with us, in a small pot in the greenhouse, does not exceed two 

 feet. Has flowered freely in July, and promises to ripen seed. 



Podolepis gracilis. 



P. gracilis ; herba erecta gracilis ramosa, foliis sparsis, integerrimis, gla- 

 bris, inferioribus ovato-oblongis, superioribus ovato-acuminatis. 

 Description — Root descending, tapering, having short, lateral, branch- 

 ing fibres, annual. Stem erect, slender, very slightly compressed, smooth 

 and shining, slightly flexuose, branched ; branches suberect, resembling 

 the stem. Leaves 3-nerved, central nerre keeled behind, glabrous, 

 shining, somewhat succulent, quite entire, sessile and stem clasping, the 

 lower (34 inches long, |th of an inch broad) ovato-oblong, with a short 

 central point, the upper ovato-acuminate, and gradually becoming smaller 

 towards the flowers. Flowers radiate, terminal or axillary. Peduncles 

 (3-4 inches) long, filiform, and resembling the branches, which, indeed, 

 they should perhaps be considered, as they have distantly scattered along 

 them abortive flower-buds, each covered with an inconspicuous leaf re- 

 sembling a bractea. Anthodium ovate, imbricated, dry, membranous, 

 shining, greenish, when withered pale brown ; scales ovate, entire, ha- 

 ving a distinct middle rib occasionally projecting at the apex in form of 

 a little mucro, on rough footstalks, in the inner scales as long as them- 

 selves, but shorter in the outer, which are loose, and extended a little way 

 on the peduncle. Receptacle naked, tubercled. Florets of the disk (near- 

 ly f ths of an inch long) hermaphrodite, rose-coloured, especially at their 

 apices, divaricated, and projecting ouiwards between the tubes of the 

 ' ray, regular, 5-cleft, segments spreading. Anther-tube included, burst- 

 ing at its apex, and discharging white pollen ; filaments nearly as long as 

 the anthers, inserted into the corolla above the middle of the tube. 

 Ray at first rose coloured, but soon feding to white, spreading, (1| inch 

 across,) coroUula? ligulate; tube (|ths ot an inch long) filiform; limb 

 equal in length to the tube, linear- oblong, cordate at the apex, bi-nerved. 

 Seeds small, leaden coloured, lanceolate-oblong, dotted, slightly tomen- 

 tose, having at the base an umbilicus, which is circular, white, slightly 

 excavated, with prominent edges; many abortive. Pappus simple," rough, 

 nearly equal, half the length of the tube of the ray, two-thirds of that 

 of the disk. 

 The seeds of this plant were sent to us from New South Wales in No- 

 vember last by Mr Fraser, as a species of Centaurea. The ])lant8 have 

 been kept in the greenhouse of the Royal Botanic Garden, and will pro- 

 duce very few seeds. 



Sisymbrium brachycarpon. 



S. brachycarpon ; caule erecti, simplici, foliisque glanduloso pubescente ; 

 foliis sessilibus, lyrato-pinnatis, foliolis profunae pinnatifidis ; pedicel, 

 lis patentibus, vix siliquam suberectam, glabram, subclavatam, ae. 

 quantibus; petalis calycem superantibus. , 



