“ 
* 
PLANTE FENDLERIANS. 7 
23, S. MICRANTHUS (sp. nov.): caule gracili inferne scabro superne glaberrimo pani- 
culato ; foliis anguste linearibus integerrimis scabris (in sicco falcato-contortis) ; raceris 
gracillimis laxis ; floribus pusillis erectis ; petalis lineari-spathulatis (roseo-albidis) calycem 
Jaxum purpureo modice tinctum) paulo excedentibus ; filamentis liberis inclusis; siliquis fili- 
formibus teretis appresso-erectis ; seminibus immarginatis.— Margins of Santa Fé Creek; 
July. — The smallest-flowered species of the genus. Allied to the preceding ; but the 
flowers only a line long, and the siliques in all stages strictly erect. These are small in 
proportion, 12 inch long at most, scarcely thicker than sewing-thread, and quite terete. 
Stem two feet high ; the slender leaves one to two inches long, the upper nearly filiform. 
24, S. LINEARIFOLIUS (sp. nov.): glaberrimus ; caule erecto apice paniculato ; foliis 
linearibus vel inferioribus lanceolatis acutatis integerrimis basi attenuatis sessilibus rigi- 
diusculis subglaucis ; petalis obovatis (roseo-purpureis), unguibus calyce laxo subduplo 
longioribus ; siliquis (immaturis) erectis filiformibus teretiusculis (2} unc. longis) stylo 
brevissimo apiculatis; seminibus immarginatis oblongis. — Mountainous regions from 
Santa Fé to Vegas, on sunny rocks; July, Aug. — Plant a foot or more in height, from 
“an annual or biennial root, often branched from the base. Leaves 14 to 23 inches long, 
pale, rigid, all tapering to a narrow base ; the radical wanting. Sepals turning purplish. 
Petals half an inch long, or less. Valves of the narrow silique carinate — one-nerved. 
25. ARabis HirsutTA, Scop. Santa Fé Creek, &c. June, July. 
126. Puaetsts-cnser ea Wiehe eee 
27. ‘T. paruta, Graham! in Edinb. New Phil. Jour. ; Hook! Fl. Bor.-Am. 1. p. 
_ 40.— Moist, sandy soil and on rocks, Santa Fé Creek; March to May. — Flowers 
Feit a oh 
~ white, usually tinged with rose-color, rather smaller than in the original specimens.* 
* T. retrofracta, Hook. (which, according to a Greenland specimen from Prof. Vahl, is Arabis Holbollii, 
Fi. Dan.), has hirsute pedicels, as mentioned by Graham in the original description. We have a variety of 
this (in flower only), gathered on the Kooskooskee River by the Rev. Mr. Spalding, which has deep purple 
flowers like a Streptanthus. It is, perhaps, the Streptanthus angustifolius of Nuttall. 
There are no well-defined limits between Streptanthus, Arabis, and Turritis. The subjoined is a new 
Texan species, which might, perhaps, as well be referred to Arabis § Lomaspora as to Streptanthus. 
STREPTANTHUS PETIOLARIS (sp. nov.): subglauca; caule elato; foliis omnibus longe petiolatis am- 
plis, radicalibus parce pilosis lyrato-sectis, caulinis glaberrimis inferioribus lyrato-3—5-lobatis vel hastatis 
triangulato-lanceolatis repando-dentatis acuminatis, superioribus lanceolatis plerisque integerrimis; racemo 
virgato laxifloro ; petalis spathulatis albidis et purpureo tinctis calycem erectiusculum virido-purpurescentem 
subdimidio excedentibus pedicello apice incrassato brevioribus; siliquis lato-linearibus complanatis rectis 
erectis stylo brevissimo apiculatis; valvis planis venulosis basi tantum uninervatis ; seminibus in loculis circ. 
20 latissime alatis septo equilatis ; funiculis septo adnatis, parte libera dilatatis. — San Marcos Spring, Texas, 
Mr. Charles Wright ; May. Also raised in the Botanic Garden from seeds which flowered as an annual in 
_ September. — Whole plant glabrous, except the base of the stem and the lowest leaves. Stems 2 or 3 feet 
