172 Dr Graham's Desc?'tption of New or Rare Plants. 



Description. — Shj-vb erect ; stem round, brown ; branches erect, green 

 when young. Leaves linear, and very slender, slightly twisted, niucro- 

 nate, obscurely channelled on both sides, veinless, slightly scabrous, im- 

 bricated, persisting, very numerous. Peduncles axillary, crowded at the 

 extremities of the branches, erect, elongated, slightly scabrous, and 

 having a fe^v scattered, ovato-acuminate, bluish bractese, but no flowers 

 except at the top, where they support a short spike. Flowers in the bud 

 slightly tinged purple, afterwards white, spreading, each sessile in the 

 axil of a bractea, which is larger than those below. Calya? pubescent ; 

 tube curved outwards, and obscurely tetragonous, limb inflated, bi-la- 

 biate ; upper lip pointed, reflected ; lower lip of three straight erect teeth 

 of equal length, but the two outer are rather broader than that in the 

 middle. Stamens 4, inserted into the throat of the calyx ; filaments 

 short, double, the two portions of that under the acute segment of the 

 perianth, adhering to each other throughout their whole length, the 

 other three cleft ; anthers brown, cordate, that on the first filament bi- 

 locular, those at the sides unilocular, and adhering to one- half of the fila- 

 ment only ; there is no appearance of anther on either of the pointed ter- 

 minations of the filament on the lower side of the calyx ; pollen white. 

 Germen obversely conical, silky, and crowned with a long tuft of unequal 

 hairs ; ovules few, green, pear-shaped, flattened ; style passing out between 

 the segments of the barren filaments, reaches beyond the stamens, en- 

 larging upwards ; stigma hooked. 



Our plant was raised from seed sent by Mr Alton from the Botanic Gar- 

 den, Kew, in 1823, under the name of C. erectum, and has flowered in 

 spring for several years. It is kept in the greenhouse, and remains a 

 long while in flower. The leaves are longer, and less crowded than in 

 Mr Rudge's figure, no doubt from our plant being more vigorous. The 

 singular connection of the anthers in the bud, will be detailed by Dr 

 Hooker in dissections accompanying a figure in the Botanical Magazine. 



Draba gracilis. 



D. gracilis ; caule folioso, erecto, ramoso, pubescenti ; foliis ovatis ser- 

 ratis, stellatim pilosis, pilis ramosis ; pedunculo oppositifolio, ad basin 

 piloso, supra cumque pedicellis et silicula oblonga glabro ; calycibus pilo- 

 siusculis ; pedicellis flore longioribus. 



D. lutea, /3 longipes, Richardson's Botanical Appendix to Franklin's Nar- 

 rative, 257 — Decand. System, vol. ii. p. 351 ? 



Description. — Annual or biennial. Stem more or less leafy, branched, 

 clothed with loose hairs ; branches spreading, having pubescence like 

 that on the stem. Leaves ovate (the root-leaves sometimes obovate), 

 flat, serrated, veinless, but with a strong middle rib projecting be- 

 hind, hispid with tufted, branched, spreading hairs. Peduncles slen- 

 der, many -flowered, opposite to the leaves, erect, about three inches 

 long when half the flowers have been expanded, slightly hairy as far as 

 the lowest pedicel, above this smooth and shining, hairs simple or 

 branched : Pedicels corymbose, crowded, erect, longer than the flowers, 

 when in fruit spreading, straight, filiform, shining, elongated to more 

 than half an inch, and loosely scattered over the lengthened peduncle. 

 Calyx yellowish-green, cup-shaped, segments ovate concave, unequal, 

 and having a few long, spreading, branched or simple hairs. Corolla mi- 

 nute, but longer than the calyx, yellow ; petals unguiculate, linear-ob- 

 cordate, spreading in the upper half, obscurely veined. Longer stamens 

 projecting a little way above the plain of the spreading part of the pe- 

 tals, the shorter, scarcely as much below it ; anthers bilobular, yellow ; 

 fUaments pale. Germen green, ovate ; style very short ; stigma large, and 

 reaching to the anthers of the long stamens. Silicle naked, a little irre- 

 gular on its surface. Seeds numerous. 



Seeds of this plant were received from Dr Richardson in November 1827, 

 along with an extensive collection made by Mr Drummond and him in 

 the expedition to the northern coast of America, from which they had 

 just returned. It was raised under a cold frame in the Royal Botanic 



