— i 
HELIOPHILA digitata. 
Finger-leaved Heliophila. 
u 
TETRADYNAMIA SILIQUOS A. 
Nat. ord. CRUCIFERZ. Subordo 5. DIPLECOLOBEX. Cotyledones in- 
cumbentes lineares bicrures seu biplicate, nempe bis transverse plicate, se- 
mina depressa. Tribus 19. HELIOPHILER. Dec. syst. 2. 676. 
HELIOPHILA, L.— Calyx basi equalis. Dee. prodr. 1. 231. 
H. digitata, caule herbaceo pilis patulis hispido, siliquis linearibus, foliis 
ovalibus integris aut hinc inde grosse inciso-dentatis. Dec. syst. 2. 686. 
prodr. 1. 233. 
H. digitata. Linn. f. suppl. 296. Willd. sp. 3. p. 530. Pers. ench. 2. p. 204. 
H. coronopifolia. Thunb. prodr. 107? Pers. ench. 2. 203? 
M. De Candolle doubts whether this may not be a va- 
riety of his H. pilosa, the H. arabioides of the Botanical 
Magazine. Our figure was made from a plant which flow- 
ered at Mr. Colvills Nursery some months since. It is a 
tender annual, of great beauty when grown in mass. We 
have had no opportunity of describing the species. 
In the elaborate arrangement of Crucifere by M. De 
Candolle, the curious differences in the structure of their 
seeds, which were first applied as generic distinctions by Mr. 
Brown, have been employed to separate the natural order 
into five sub-orders and twenty-one tribes. Among the last 
of these, the station of Heliophila has been fixed, along 
with Chamira of Thunberg, remarkable for its spurred ca- 
lyx. The peculiarity which has been found to separate 
Heliophilew, Subulariece, and Brachycarpee, from the other 
tribes of Cruciferz, is the double plaiting of the cotyledons 
to the face of the first fold of which the radicle is so ap- 
plied, that a cross section of the embryo presents the fol- 
lowing appearance, O || || ||; while a similar section of the 
embryo of the order Spirolobece, which stands next to Di- 
plecolobew, in which the cotyledons are only once folded, 
presents the following appearance, O | |. The genus He- 
liophila itself is divided, from differences in the pods, into 
eigbt sections, which we think are, with sound judgment, 
considered as such, rather than as so many different pn 
