43 2 
Journal of Agricultural Research 
Vol. I, No. s 
Ciiropsis gabunensis differs from all its congeners in having very small 
flowers, with hairy filaments, caudate leaflets, and a nearly dry fruit. 
The flower buds are only 5 to 6 mm. long and the fully expanded flowers 
are only 10 to 12 mm. in diameter. The filaments are hairy. The pistil 
is very short (3^ to 4 mm.) and shows a well-marked, clavate ovary, 
narrowed gradually toward the base and rounded at the tip, which is 
clearly delimited from the slender style which ends in the subglobose 
4- lobed stigma. (See fig. 4.) The pedicels are very long (sometimes 
8 to 12 mm.), often twice as long as the pistil, and appear as branches 
of a slender peduncle % to 2 cm. long. 
No other species of Citropsis shows so much variation in the size of 
the leaves and in the number of leaflets. They may be unifoliate, 
greatly resembling orange leaves, or they may have 5 to 7 leaflets. 
Very frequently the leaves are 5-foliate, with the terminal leaflet borne 
at the end of a winged segment of the rachis. Such stalked terminal 
leaflets are often seen in trifoliate leaves (see fig. 3) but almost never in 
5- foliate leaves of other species of Citropsis. The leaflets are caudate— 
unlike any of the other species. 
Those of compound leaves are from 40 to 115 by 18 to 60 mm., 
mostly 50 to 100 by 25 to 45. The leaflets of unifoliate leaves are 90 to 
150 by 40 to 70 mm. The winged petioles are 15 to 35 by 3 to 15 mm., 
varying from linear to narrowly obcordate, especially in unifoliate 
leaves. They are usually broadly rounded at the tip and narrowed 
gradually toward the base. The rachis segments vary from 20 to 45 
by 4 to 10 mm. and usually have the same shape as the winged petioles. 
Citropsis mirabilis (Chev.), n. comb. 
Limonia mirabilis Chevalier, 1912, in Bui. Soc. Bot. France, t. 58, 1911, Mem. 8d, p. 144-145. 
The following material has been consulted: Ivory Coast.— Chevalier (No. 21609), 
May 21, 1909, between Sanrou and Quode on the Koue River (Chevalier Herbarium, 
Paris; National Herbarium, Washington, D. C.). 
Chevalier has described Ciiropsis mirabilis in detail, but unfortu- 
nately no fruits are known. The leaves are 3- to 5-foliate, with broadly 
oval or oblong leaflets 90 to 190 by 40 to 100 mm. The petioles are 
usually elongate elliptical, 60 to 70 by 20 to 30 mm., rather acute at 
both ends, rarely broadly rounded at the tip. The segments of the 
rachis are 80 to 70 by 12 to 28 mm., usually narrowly elliptical, rarely 
broadly rounded at tip. The spines are single, 10 to 28 mm. long, 
sometimes wanting. The flowers occur in dense many-flowered clusters 
in the axils of the leaves. The pedicels are well-developed, 5 to 6 mm. 
long. The buds are linear elliptical, 12 to 14 by 3 mm., the flowers 
when open are 18 to 24 mm. in diameter, usually 4-merous, but some¬ 
times 5-merous. The pistil is 12 to 14 mm. long, the style 10 to n mm 
long, very slender, and not appreciably broadened at the base. 
