444 PATAGONIAN EXPEDITIONS ! BOTANY. 



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twice their length. Silicle (without the style) as long as the pedicel, at 

 first villous, afterwards smooth, and torted. Style 3-4 mm., stigma capi- 

 tate. The mature fruit has pedicels 3-4 times as long as the silicles. 



( Perhaps = D. magellanica Lam.) 



(Chilian and Valdivia) ; Chubut, in the mountains at Bolson. 



10. DRABA GRAMINIFOLIA Speg. 



Glabrous, cespitose, stoloniferous, 10-14 cm. high. Leaves fasciculate 

 at ends of the branches, acutish, attenuate to a long petiole ; the base 

 sheathing. Scapes stout, lax-racemose. Lower/^<//^/5with a leaf; upper 

 naked. Silicles lanceolate, or narrow-elliptical. Stigma subsessile. 



S. Patagon., rocks near Lago Argentino, at Karr-aike. 



ii. D. HATCHERIANA Gilg, n. s. (Plate XVIII, B.) 



Low cushion-like perennial, with thick multicipital root, and short 

 branches covered by the remains of withered leaves. Leaves rosulate at 

 the ends of the branches, oblanceolate, acute, cuneato-angustate down- 

 wards, coriaceous-fleshy, obsoletely ciliate on the margin. Flowers appar- 

 ently whitish, subcapitately crowded in dense i o-3o-flowered racemes; on 

 a short leafless scape, but with largish bracts at base of the pedicels. 

 Sepals reddish, broadly obovate, apically rounded. Petals half exceeding 

 the sepals, narrow-unguiculate below, orbicularly obovate, and apically 

 rotundate. Ovary broad obovate, compressed. Style short, thick ; stigma 

 capitate. 



S. Patagonia, by Rio Coy Inlet (collected by Hatcher, Nov., 1896, and 

 dedicated to him on the occasion of his decease, July 3, 1904). 



The following is Professor Gilg's diagnosis : 



DRABA HATCHERIANA Gilg n. sp. (Plate XVIII, B.) 



Perennans humilis pulvinaris radice crassa multicipite, ramis brevibus vel brevissimis ascen- 

 dentibus reliquiis foliorum emarcidis densissime obtectis ; fbliis apicem ramorum versus densi- 

 uscule vel dense rosulatis, oblanceolatis, apice acutis, basin versus sensim longe cuneato-angustatis, 

 coriaceo-carnosis, margine hinc inde obsolete ciliatis ; flonbus verisimiliter albidis in racemos densos 

 vel densiusculos io~3O-flores subcapitatos collectis, scapo brevi nudo, sed bracteis euphylloideis 

 majusculis ad pedicellorum basin evolutis ; sepalis rubescentibus, late obovatis apice rotundatis ; 

 petalis quam sepala plus sesquilongioribus, in parte 2/5 inf. anguste unguiculatis, superne valde 

 dilatatis orbiculari-obovatis rotundatis ; staminibus normalibus ; ovario late obovato, crassiusculo, 

 conspicue compresso ; stylo brevi, crasso, stigmate capitato. 



