164 DR. HOOKER AND DR. THOMSON'S PR.ECURSORES 



There are several other Sisymbrioid plants in the Indian collections 

 which we are unable to dispose of. One, Affghanistan, Griff. (14/0 & 1472, 

 Hab. non nota) resembles S. junceum, but has very long pedicels to the 

 flower, and may be a form of one of those already described. 



20. Eutrema, Br. 



1. E. Himalaicum (H.f. fy T.). Caule simplici robusto, foliis inte- 

 gerrimis, radicalibus longe petiolatis oblongo- v. ovato-cordatis obtusis, 

 caulinis ovato-oblongis ovato-lanceolatisve obtusiusculis basi sessili 

 semiamplexicauli, floribus majusculis albis capitatim congestis, sili- 

 quis longe pedicellatis suberectis brevibus. 



Hab. In Himalaya orientali temperata, Sikkim! alt. 10000-1 3000 ped., 



J. D. H. (fl. Jun.) (v.v.) 

 Smelowskia integrifolia (Siberia;) arete affme, differt foliis superioribus 



basi auriculatis. 



2. E. primuLjEfolium {H.f. fy T.). Glaberrimum, rhizomate crasso, 

 foliis amplis subserratis, scapis foliis brevioribus foliosis, siliquis cras- 

 siusculis curvis £-f " long., valvis enerviis, stylo 0, septo replum mar- 

 ginante. 



Sisymbrium primulaefolium, Thorns, in Hook. Kew Journ. Bot. iv. t. 10, 

 et v. p. 18. 



Hab. In Himalaya occidentali temperata, alt. 6000-11000 ped.! Kash- 

 mir ! et Simla \T.T.; Kumaon ! Str. $ Wint. (11. Apr .-Mai.) (v.v.) 



21. Erysimum, L. 



The species of this genus are most difficult of determination 

 and diagnosis. Nos. 1, 4, 5, 6 & 11 seem very distinct forms ; 

 in the remainder we have little confidence. Of the majority of the 

 described European, Asiatic, and Oriental species we can make 

 nothing at all. 



§ 1. Vage ramosa. Siliqua maturce horizontales, subsessites, pedicello 



brevi crasso. 

 1. E. repandum (Linn.). Ramosum, foliosum, foliis lanceolatis in- 



tegerrimis v. repando-dentatis, pedicellis calyce multo brevioribus, 



siliquis glaberrimis teretiusculis pedicello horizontali crasso vix lati- 



oribus in stigma truncatum attenuatis. 

 E. Grifnthianum, Boiss. Diagn. ser. 2, i. p. 28. 

 Hab. In Affghanistan arenosis triticetisque frequens ! Griffith ; Beluchi- 



stan ! Stocks ; Himalaya occidentali temperata, alt. 5000-7000 ped., 



Kashmir ! T. T., Winterbottom. (fl. Jun.) (v.v.) 

 Distr. Persia ! Syria ! Asia minor ! prov. Caspian. ; Rossia ! Germania ! 



Gallia ! ins. Canaries ! 

 Variat insigniter statura. Flores in exemplaribus ex Affghanistan mi- 



nores quam in Himalaicis. Siliqute primo erectae. Ab E. repando, 



L., certe non differt. 



