364 
41. UilBELLACEiE. 
letely 10-ribbed ; 5 dorsal ribs (3 primary and 2 secondary) ap- 
proximate equidistant subequal line filiform obsolete or incon- 
spicuous, the 2 commissural primary ribs at or within the iimer 
base of the wings distinct remote. Marginal wings thin but 
stiff or firm, subpellucid or paler than the rest, unequally toothed 
or serrulate, about half a line broad, widening a little and more 
closely and evenly serrulate and slightly waved or plicate up- 
wards, each ending in a prominent tooth with a deep notch at 
top and a shallow notch at bottom on each side. Vittce 9 ; 5 
dorsal, 2 marginal under the wings, and 2 commissural very 
broad and approximate in the middle of the j uncture. 
Though properly only once-flowering, and then altogether 
perishing with the very root, sometimes the branched umbel- 
panicle alone dies down to the central main st. which survives j 
and thus the pi. becomes very rarely once or twice forked or 
branched and more than liapaxanthous, though in no case flower- 
ing in two years consecutively. The length of time before it 
flowers varies according to elevation, situation, soil, supply of 
water, &c. Thus in gardens at Funchal the pi. is truly ann., flow- 
ering and then perishing within the same year ; but in its native 
glens its term is rarely less than 2 or more than 3 or 4 years. 
The whole pi. when cut or bruised gives out a copious fra- 
grant glutinous transparent shining y. gum or resin with a 
strong scent of spirits of turpentine and carrots, or something 
like the fl. of the large blue Iris (I. gennanica L.). In drying 
the 1. turn a peculiar dull olive-brown. 
First discovered wild up the Bib. de S. Jorge in 1829(Novit. 
20 or 542). Though some time previously cult, in Europe, its 
native country had remained unascertained. It is strictly and 
peculiarly indigenous to Mad., being found neither in the A^res 
nor the Canaries, though in the latter it is well represented by 
Tinguarra cervaricefolia (DC.) = Athamantha cervaricefolia DC., 
WB. t. 71, a pi. with equally fine foliage and frutescent st., but 
with apterous, fusiform, rounded (not winged and dorsally com- 
pressed or flattened) fr. and belonging to the tribe Seseline.32. 
DeCandolle attributes the name decipiens to the fact of the 
pi. in cultivation having been formerly mistaken for Bubon Gal - 
banum L. by gardeners or horticulturists. 
The very minute obscure irregular pubescence at the edges 
of the pet. is a sort of rudimentary indication of a character de- 
veloped in Monizia. 
