124 PRINCIPLES OF BOTANY, ETC. 
that is set with hairs on the under part, like a 
pappus. 
5. The rosrRuM is a persistent style remaining 
on the seed, cr on the pericarp, as in Scandix, Si- 
napis, &c. When the rostrum 1s crooked, it is called 
a horn, (cornu), as in the capsule cf Nigella da- 
mascena, and many others. 
6. The wince, (a/a), 1s a cartilaginous, thin, tran- 
sparent membrane, that is found on the top, on the 
back, or on the margin of the seed or of the peri- 
oun Of this there are the following varieties : 
a. Monopterygia, when there is but one wing. 
b. Dipteryg gia, s. bialata, when there are two 
wings, fig. 161. 
c. eae s. trialata, three wings. 
d. Tetraptera, s. quadrialata, four wings. 
e. Pentaptera et polyptera, s. quinquealata et mul. 
tialata, with five or many wings. ‘This kind 
s found in many capsules, and in the seeds 
of some umbelliferous plants. The seeds 
likewise of umbelliferous plants that have 
many wings are called semina molendinacea. 
N. Yo this term is-also to be referred the mem- 
branaceous transparent margin, (margo membrana- 
ceus), which surrounds some pericarps and seeds. 
7. Vhe Crest, (crista), is a thick, coriaceous or 
cork-like wing, indented or deeply split, that ap- 
pears on the top of some pericarps, as in Hedy- 
sarum Crista Galli. 
8. The ribs, (gosta s. sugum), are very prominent 
xidges, that are seen in some pericarps, and on the 
seeds of umbelliferous plants. 
9. The 
