( 237 .) 
CHEIRA'NTHUS* *. 
Linnean Class and Order. Tetradyna'mia f, Siliquo'saJ. 
Natural Order. Cruci'fer®§, Juss. Gen PI. p. 237. — Sm. 
Gram, of Bot. p. 138. Engl. FI. v. iii. p. 153. — Rich, by Macgilliv. 
p. 498. — Crucifer.® ; subord. Pleurorhi'ze®|| ; tribe, Ara- 
bi'de®^!, Lindl. Syn. pp. 20 & 22 ; Introd. to Nat. Syst. of Bot. 
pp. 14 to 18. — Loud. Hort. Brit. pp. 498 & 499.; Mag. of Nat. 
Hist. v. i. pp. 143 & 239. — Don’s Gen. Syst. of Gard. and Bot. v. i. 
pp. 146 & 147. — Mack. FI. Hib. pt. i. p. 16. — Rosales; subord. 
Rh(eados®: sect Rh®adin®; type, Brassicace®; subtype, 
Arabid® ; Burn. Outl. of Bot. pp. 614, 784, 847, 854, & 856. — 
Siliquos®, Linn. 
Gem. Char. Calyx (fig. 1.) inferior, of 4 oblong, concave, up- 
right, converging, deciduous sepals ; the 2 opposite ones protu- 
berant at the base. Corolla (fig. 2.) cruciform, of 4 inversely 
egg-shaped, spreading, entire or slightly notched petals (fig. 3.) ; 
their claws upright, the length of the calyx. Filaments (fig. 4.) 6, 
awl-shaped, parallel, simple, distinct, the 2 opposite ones shortest, 
with a nectariferous gland at the base, jdnthers upright, oblong- 
arrow-shaped, acute, of 2 strap-shaped lobes. Germen (fig. 5.) 
strap-shaped, compressed, a little tumid at each side, the length of 
the stamens. Style short, nearly cylindrical. Stigma (see fig. 5.) 
either of 2 thick spreading lobes, or capitate and slightly notched, 
permanent. Pod (siliqua) (fig. 6.) strap-shaped, compressed, 
2-edged, rather convex at the sides, mostly with an elevated, lon- 
gitudinal, central line ; valves (see fig. 7.) straight ; partition mem- 
branous. Seeds (see figs. 7, 8, & 9.) ranged alternately, in a single 
row, egg-shaped, compressed, slightly bordered at the summit (see 
fig. 9.) and often at one side also ; cotyledons accumbent (fig. 10). 
Distinguished from other genera, with accumbent cotyledons (o=), 
in the same class and order, by the upright converging calyx, with 
the 2 opposite sepals protuberent at the base ; the 2-lobed or capi- 
tate stigma ; and the compressed or 2-edged pod, with the seeds in 
a single row. 
One species British. 
CHEIRA'NTHUS CHEIRI. Common Wall-flower. Wild Cheir. 
Spec. Char. Leaves spear-shaped, acute, entire, clothed with 
2-parted, close-pressed hairs. Pods linear; lobes of the Stigma 
spreading. Stem shrubby. 
Fig. 1. The Calyx. — Fig. 2. The Corolla. — Fig. 3. A separate Petal. — Fig. 4. 
The 6 Stamens. — Fig. 5. The Germen, Style, and Stigma. — Fig. 6. A Pod.— 
Fig. 7. A Pod, with the valves separating, showing the Partition, and the Seeds. 
— Fig. 8. A Seed.— Fig. 9. Ditto. — Fig. 10. The accumbent Cotyledons and 
Radicle. — Figs. 9 & 10 magnified. 
* From cheiri or kheyry, the Arabic name of a plant, with very red sweet- 
scented flowers, and anthos, Gr. a flower ; or perhaps from cheir, Gr. the hand, • 
and anthos, Gr. a flower ; hand-flower. Don. 
+ See folio 38, note f. J See folio 62, note f . § See folio 38, a. 
|| See folio 141, note ||. IT See folio 159, not* f. 
