MACLOSKIE J CRUCIFER^E. 445 



The plant rises like a cushion, about 22.5 cm - above the ground. Its rosette- leaves are 12 

 13 cm. long, at their upper part about 1.5-2 mm. broad. The inflorescence is on the whole 

 about 1.5 cm. high, of which the flowerless part comprises i-i.i cm. The bracts are 3-5 mm. 

 long, I mm. broad. The pedicels are about 3 mm. long. The calyx-leaves are 2.5 mm. long, 

 nearly of the same breadth. The petals are about 4 mm. long, in the upper part 2.5 mm. broad. 



" This new species appears to me to be closely allied to Draba spegazziniana Dusen (Gefass- 

 pflanzen der Magellanslander, p. 1 77.) = Draba oligosperma Spegazzini. Probably it does not 

 belong to the genus Draba ; but so long as we are unable sharply to define the generic limits of 

 the South American species of Cruciferae I insert it provisionally in Draba. It does not belong 

 to Braya." (Ernst Gilg.) 



12. DRABA INCANA Linn. 



Perennial or biennial, erect, simple or somewhat branched, stellate- 

 hairy, 15-30 cm. high. Leaves 8-25 mm., lanceolate, or oblanceolate to 

 ovate, acutish to obtuse ; toothed or subentire. Flowers 2-3 mm. broad. 

 Petals white, notched, twice as long as the calyx. Silicles oblong or 

 lanceolate, acute, twisted when ripe, on short suberect pedicels. Style 

 minute. 



Arctic and alpine Eurasia. Cold parts of N. Amer., and by Rocky 

 Mountains to Magellan. 



D. INCANA SYLVATICA (Alboff.). 



Tender, low, green. Stem simple. Leaves larger, membranaceous. 

 Less pubescent than the type-form, D. incana. 

 Fuegia, valley of Olivaia. 



13. D. KARRAIKENSIS Speg. 



Glabrous perennial ; green-glaucescent, branching. Leaves fleshy, 

 orbicular to obovate, crenate, toothed, or incised. Scapes leafy, apically 

 spreading, spicate-corymbed. Silicles ovate to lanceolate. Style long ; 

 valves of silicic nerveless. Stigma capitellate. Seeds 4-7 in each cell, 

 2-seriate. 



S. Patagon., in dry, denuded parts. Mar.-Apr. By San Julian, Golfo 

 de San Jorge to Rio Deseado. 



14. D. MAGELLANICA Lam. (including D. saffordi Phil, and D. gillesii, 

 H. and A.) (Plate XVIII, A., the type-form.) 



Perennial, 8-30 cm. high, covered by short appressed hairs. Radical 

 leaves in a rosette, oblong, more or less obtuse. Canline leaves sparse, 



