— 13(i — 



mémo oblique inter scinina serpente, e meiiibranis tribus conslanle quarum média 

 fibias cloiigatas olTert. 



A. Flores albi v. liiacini. 



158. S. humile C.-A. Mev. in Led. FI. ait. m, 1o7. Led. le. jjI. fl. nm. illustr. 

 lab. \hl ; FI. ross. i, 18ù. Regel Avfzœld. der von liaddeiu 6uikalien,vlc. in Bull. 

 Soc. ïiat. Moscou 1861, p. 203. Torrey et Gray FI. of norffi Am. i, 93. Hook. FI. 

 bor.-am. I, 62. J. Hook. et Tlioms. in Journ. Linn. Soc. v, 163. AValp. Itcp. i, 164. 

 Hesperis caule rmnosismno, foliis lineariljus, pedunctdis glaOris Ginel. F/, sdi. 



m, 292 n. 21 ? — Hesperis minima, angusti folio, incanu et pi/osa, florihus albis. 

 Amman. Ruth. p. 5.t, n. Ik ? 



Planta annua v. biennis, diffusa, plerum([ue liuinilior, pube molli incumbcnte alba 2-, 

 3- V. 4-fid.i, incnna et pilis rigidis simplicibussubhirta. Gaules exjuna radiée plures, basi 

 decumbentes, apice assurgentes, raniosi, foliosi. l'olia radicalia pctiolata, auguste oblouga, 

 dentata v. subpiunatifida ; caulina inferiora radicalibus similia, at jiaulo minora, superiora 

 seusim minora, in petiolum brcvem attenuala, subintegerrima. Pedicelli lloribus paiilo 

 longiores, maturis fruclibus paulum incrassali, 2-5""" longi. Flores médiocres. Calyx 

 erecliusculus, sepalis oblongis, oblusis, purpurasccutibus ; corolla alba v. violacea, caly- 

 cem plus quam duplum lequans, limbo patente, sidjnrbicidato, apice paulum retusu, ia 

 unguem calyci œquilongum desiueutc. Glaudula hypogyna viridis in utroque latere lila- 

 nienlcrum breviorum. Siliquœ tcretiusculœ, 10-14 lin. longœ ; ercclo-appressie, pub'S- 

 cei;les, rosirobrevi obconico, stigmate truiicato siibemarginato, valvis teuuiter uninervis, 

 dissepimenio eiicru, cujus cellulie membrauarum externaium margine transversal, dein 

 in medio obliquai, incrassal;e, niulliporosa;. Semina radicula exacte dorsali v. subobliqua. 



Crcscit in locis subsaisis et siccis Sibiri* allaica-, etiam Sibiria' orienialis (Slubendorf), 

 cl in Tibetia occidentali temperata et subalpina, 12000-15000 ped. alla (Winterboilom, 

 T. Thomson), junio florcns, et in uioutibus Scopulosis^ lat. 52-57°. 



Var. a. iiijgi'op/dliim [S. Iiumile var. p. Bunge Enum. ait. T2). — Floribus et siliquis 

 niajoribus ; foliis pinnatiliilis viridibus. — Crescil ad lacutn p.rope flumen Tcjl'a iii Sibiria 

 (Turczaniiiow). 



159. S. diffusnm Asa Gray in l'I. Wright. Tccano-Nco-Mexicanœ, parti, p. 8; part 2, 

 p. 12. "NValp. Ann. IV, 210. 



Planta pcrcnnis, pube 3-4 fida minuta canescens. Gaules dilTusi, ramosi.ssiiiii, ramis 

 usque ad apicem foliosis. Folia oblouga, obtusa, basi ailenuata, siniiato-denfnt/i, imave 

 pinmtifuio. Flores (jarvi. Curolla brevior calgce. Siliqu;e patenter, leretes, brèves, 4-5 

 lin. longae, fere subiilatne, canescentes, stylo manifeste superalœ. 



