a : 
| 
} 
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388 
ERYSIMUM diffusum. 
Aljine Hedge-mustard. 
i 
TETRADYNAMIA SILIQUOSA, 
Nat. ord. CruciFERrx... Jussieu gen. 237. Div. I. Fructus siliquosus. 
Stylus nullus. 
_ ERYSIMUM. Siliqua tetragona. Semina emarginata. Cotyledones 
incumbentes. Stigma capitatum, nunc emarginatum Jobulis patentibus. 
Cal. clausus. Brown in Hort. Kew. ed. 2. 4. 115. 
E. diffusum, foliis lanceolato-linearibus integerrimis v. paucidentatis: pilis 
bipartitis, unguibus calyce longioribus; ]aminis obovato-oblongis, sili- 
uis erectiusculis elongatis; stigmate bilobo; stylo brevissimo. Brozun 
OC. Cit. 
Erysimum diffusum. Ehrh. beitr. 7.157. Willd. sp. pl. 8. 512. Hort. Kew. 
ed. 2. 4. 115. 
Erysimum canescens. Roth catal. bot. 1.76. 
Cheiranthus alpinus. Linn. mant. 93. Jacq. austr. 1.48.t. 75. Hort. Kew. 
2. 394. 
Eruca sylvestris angustifolia. Lob. ic. 205. 
Tota planta scabriuscula est. Rad. albida, 2 3 ad 10 uncias longa, 2 v. 
plures lineas crassa, lignosa, biennis, modo recta descendit, modo inter saxa 
varie distorquetur, et primo anno sola promit folia radicalia. Caules slricté 
eriguntur, aut solitarii, aut rariits pauci, ab 1 ad 3 pedes alti, modo simplicis- 
simi, modd superné ramosi, subangulati, tenues, Jirmi, parm scabri. Fol. 
sunt lanceolato-linearia, pilis brevissimis et vix conspicuis modicé exasperata, 
sessilia, inordinaté alternantia, magis minisve conniventia, acutaque. Hac 
caulem anté florescentiam satis numerosa decorant; sed brevi post illam ares- 
cunt, pereuntque, aded quidem ut sepe sub florescentia finem caulis vel ad 
ramos racemosve usque foliis nudatus spectetur. In aliis autem individuis sunt 
angustissima, vere linearia, integerrima, fermé incana, et velut? convoluta. 
In aliis multd sunt latiora, magis virentia, et inferiora obitér atque rariter 
dentata. Caules et rami producuntur in racemos longissimos. Flores ferme 
inodori. Calycis glauci glabri et paritm compressi foliola 2 opposita deorsim - 
ibba sunt. Pet. lutea in unguem desinunt longitudine calycis. Stig. obso- 
etius 2-fidum est. Siliquee tenues, 4-gone, et erectiuscula, modo pollicares 
aut sesquipollicares ; modo bipollicares et Jiliformes. Jacq. |. c. 
Se 
Native of the South of Europe. Cultivated by Miller, 
in the Physic Garden at Chelsea, in 1733. . 
The whole plant is roughishly furred. The hairs are 
described by Mr. Brown as biparted. Root woody and bien- 
nial. Stems straight, stiff, generally solitary, sometimes 
more than one, from one to three feet high, sometimes 
simple, at others branching at the upper part, slightly an- 
VOL. V. N 
