4 
Journal of Agricultural Research 
Vol. I, No. i 
This species differs from its congeners in having very large thick seeds and slender 
leaves four to six times longer than broad, with very large, winged petioles often as 
large or larger than the blade. It differs from Citrus hisirix DC. in having oblong 
rather than triangular winged petioles and much larger flowers with connate stamens. 
Distribution: Central and Southwestern China, i. Hupeh Province 1 
Ich’ang Prefecture. —Vicinity of Ich’ang. A. Henry, No. 3423, 1887 (?), 
“Thorny bush 4 ft., white flowers; 'in a wild jungly place; a wild plant.” 
Flowers, Kew, Paris (Museum), Dahlem, Harvard (Gray Herbarium), Washington, 
D, C. (NationalHerbarium); A. Henry, “Bottle A,” “ fruit 
from same shrub as 3423,” 1887 (?); twigs and fruits, Kew; 
seeds (fig. 1, C), Washington, D. C. (National Herbarium). 
Pingshan Pa (in Ich’ang George, 10 km. [ 6 }i miles] north¬ 
west of Ich'ang), E. H. Wilson, No. 4736 (small fruit, see 
fig. 2), No. 4737 (large fruit, fig. 3), November, 1907, fruits 
only (in spirits) from cultivated trees. Harvard (Arnold 
Arboretum), Washington, D. C. (National Herbarium). 
Ch’angyang (25 km. [15K miles] south-southwest of Ich’ang), 
A. Henry, No. 7695, no date. “Shrub 6 to 7 ft.,” fruits, 
Kew, sterile twigs, Harvard (Gray Herbarium); Nanto (20 
km. [i 2}4 miles] northwest of Ich’ang), E. H. Wilson, No. 
202, April 25, 1900, flowers, Kew, Dahlem, Harvard (Arnold 
Arboretum), New York (Botanical Garden). San-Yu-Tung 
Glen, 10 li [4 miles] from entrance (13 km. [8oJ^ miles] 
northwest of Ich’ang), E. H. Wilson, No. 2230B, July, 
1907, “bushy tree, 15 ft., cultivated.” Fruits (see fig. 4, B ), 
Harvard (Arnold Arboretum). Also eight duplicate speci¬ 
mens for distribution. Hsingshan District (about 17 km. 
[io )4 miles] southeast of Hsingshan), 10 li (5.8 km. or 4 
miles) below “ Liang-Shan-Kou ” (altitude 1,500 to 2,000 
ft.), E. H. Wilson, No. 2230, May 7,1907, 2 “bush, 3 to 5ft., 
flowers white, ravine,” flowers, Harvard (Arnold Arboretum) 
2 sheets. 3 (Also 8 duplicate specimens for distribution.) Hsingshan District, about 
14 km. north-northwest of Hsingshan, 8 li (4X km. or 3^ miles) beyond “ Li-Er-Kou” 
(altitude 4,200ft.), E. H. Wilson, No. 2230A, May 15, 1907, “Citrus, bush or tree, 
3 to 20 ft., flowers white, escaped from cultivation, roadside,” flowers (see figs. 1, 
A and B , and 4, C), Harvard (Arnold Arboretum). Five duplicate specimens for 
distribution. 
Fig. 4 .—Citrus ichangensis 
from paratypes in the her¬ 
barium of the Arnold Ar¬ 
boretum: A t Calyx of 
dwarf wild form and pedi¬ 
cel with bracts, E. H. 
Wilson No. 3307, natural 
size; B , young fruit, E. H. 
Wilson No. 2230B, natural 
size; C, flower bud and 
pedicel with bracts, E. H. 
Wilson No. 2230A, nat¬ 
ural size. (Drawn by 
Theo. Holm.) 
1 The geographic names in China are in southern Mandarin in accordance with the spelling given in 
L- Richard’s, 1908, Comprehensive Geography of the Chinese Empire . . . Revised and translated into 
English by M. Kennelly. Shanghai, p. 558-639. 
2 Mr. Wilson’s diary for this date reads as follows: "In ravine gathered specimens of a wild citrus from 
bushes 3 to 5 ft. tall, growing on cliffs of hard limestone.” Photographs of this ravine taken by Mr. Wilson 
Jiave been distributed as Nos. 025 and 032. 
3 One twig with flowers on one of the sheets is the type (see PI. I and fig. 5). The other specimens of 
this same number resemble the type very closely, and some of them very probably were cut from the same 
plant, in which case they would be merotypes. 
