natural, the styles and foliation forming very evident and nearly constant characters j though D. cryptantlta, in having the flowers entirely sessile amongst the leaves, stands alone in the genus : unfortunately the specimens of this are not
5. D. siliquosa, n. sp. ; caule brevissimo basi ramoso, foliis versus apices ramorum rosulatis lineari-obovatis villoso-sericeis, pedunculo incano sursum pedicellis sepalisque dorso hirsutis, floribus in corymbum subcapitatuni nudum dispositis parvis albidis, petalis elongato-spathulatis unguiculatis retusis, siliquis linearibus obtusis glaberrimis, stylo nullo.
Var. /3, Antisana; foliis majoribus laxius confertis obtusis.
Hab. Colombia; Cotopaxi, 13,000 feet ; Professor Jameson. Var. jS, on walls at the Hacienda of Antisana, Professor Jameson (n. 28.).
Radix descendens, multiceps. Folia (in var. /3 f ) una longa. Pedunculi 1| unciales, simplices, nudi. Siliquee i lin. longs, lineares ; valvis planis, saspe purpureis ; seminibus oblongis, rufo-fuscis.
6. D. Macleani, n. sp. ; incano-tomentosa, caule brevissimo diviso, foliis confertis obovato-oblongis obtusis, corynibo subcapitato nudo, floribus parvis breviter pedicellatis albidis, siliculis glaberrhnis ovatis in stylum brevissimum attenuatis, valvis planis.
Hab. Andes of Peru ; /. Maclean, Esq.
A priori differt foliis incano-tomentosis, fonnaque valde diversa siliculamm attenuatarum.
7. D. ajjinis. n. sp. ; caule brevissimo diviso, foliis confertis patentibus obovato-lanceolatis subacutis sericeo-
hirsutis, pedunculo puberulo, floribus corymbosis subcapitatis parvis, siliculis pubescentibus pedicellatis elliptico-ob-
longis stylo brevissimo terminatis, valvis subconvexis.
Hab. Colombia; Hacienda de Antisana, on old walls, at an elevation of 13,400 feet; Professor Jameson.
D. siliquosa proxima siliculis latioribus brevioribus pubescentibusque prsecipue difl'ert. Ha?c cum tribus praa-cedentibus habitu et statura omnino convenit.
8. D. Falklandica, n. sp. ; vid. supra.
Hab. Falkland Islands; Lieut. Robinson, R.N.
Forma siliculae D. qffiui proxima, sed magnitudine, vahds convexis, stylo longiore, siliculisque raeemosis differt.
9. D.funiculosa, n. sp. ; vid. supra.
Hab. Falkland Islands ; /. D. H.
Species nulli arete aflinis.
10. D. aicstralis, n. sp. ; annua, gracilis, caule simpliciusculo patenti-piloso, foliis radicalibus paucis rosulatis oblongis oblongo-lanceolatisve plei-umque integerrimis obtusis supra subsericeo-hirsutis subtus stellatim pubescentibus, pedunculis glaberrimis nudis paucifloris, floribus albis pedicellatis, pedicellis fructiferis filiformibus silicida glaberrima lineari-oblonga utrinque obtusiuscula brevioribus, valvis planis, seminibus plurimis parvis. D. australis, Brown, MSS. hi Herb. Banks.
Hab. Patagonia; Mus. Banks. BahiaBlanca; C. Darwin, Esq.
Species D. lineari, Boiss., D. cimeifolia, Nutt., et D. micranthce, Nutt. similh'ma.
