48. AMBROSIA CEiE. 
567 
also leafy; the 1. all finely decompound like those of Fennel or 
of Ammi Visnaga (L.), the lowest most, the upper gradually 
less, the very uppermost only of the cyme becoming simply 
linear; the racliis and lacinim almost capillary-linear, less or 
not more than one millim. wide, very narrowly and slenderly 
subspathulate, channelled or nerved above, convex or flat- 
tened beneath. FI. small in little close cymose tufts or clusters 
at the ends of the long simple side-branches, which rising to 
the height of the main cyme form with it a large am'ple lax 
many-fid. corymbose panicle. Heads hemispherical compact 
4-5 lines in diam. on very short stiff thickly fulvo-glandulous 
ped. 2 — 4 lines long; scales of inv. short narrow linear nu- 
merous close-set finely and shortly fulvo-tomentose or vel- 
vety. Ach. and pappus precisely as in A. cheiranthifolia a, 
subv. 1 , supra. Recept. thinly sprinkled with long setose 
hairs. 
The pi. sent by me to the late Chev. De Candolle in 1832 
for A. crithmifolia Ait. was the P ta do Sol var. (5 , subv. 3, of 
A. cheiranth ifol ia Ilerit. supra ; and it was accordingly correctly 
placed in the Prodr. under his or my A. varia. The late Dr. 
Chas. Lemann in 1837 first found the true A. crithmifolia Ait. ; 
but I did not recognize it as such exclusively till very recently 
and on examination of the original type of Solander’s (Aiton's) 
A. crithmifolia in BIT, having previously called it, on its re- 
discovery by S r Moniz in 1865 in Dr. Lemann’s locality of 
1837, A. famiculacca. 
ft Order XLYIII. AMBROSIACE^E. 
The Burr-weed Family. 
FI. compound but fits, diclinous i. e. male and female in 
separate heads (anthodia) on the same pi. Male Jits, aggregate 
numerous in each head ; scales of inv. in a single row, distinct 
or concrete only at the base ; cor. gamopetalous regular funnel- 
shaped 5-toothed ; stain. 5, anthers free distinct simple at 
the base ; style filiform simple, stigma entire, ovar. abor- 
tive. Fern. Jits, single or geminate enclosed in a gamophyllous 
inv. of concrete scales forming a hard nutlike fr. ; cor. and 
stam. 0, style cylindric bifid, the branches recurved with stig- 
matic edges, persistent and protruded in fr. ; ovar. adnate 1 - 
celled 1-ovulate. Ach. obovate without pappus enclosed in 
the hardened pericarp-like inv. Seed erect without albumen, 
embryo straight, the radicle directed towards the hilum . — 
