8 WILSON EXPEDITION TO CHINA 
Leaves oblong-lanceolate; ĝ flower buds short, with a distinct carina, 
or ridge along outer segments .......2.... 5. S. glabra. 
Leaves scarcely glaucous, turning a blackish green when wilted. 
Leaves ovate to ovate-hastate, up to 5 cm. or more long; receptacle 
with its scales often 5 mm. in diam.; a large climber with a few spines. 
6. S. trigona. 
Leaves lanceolate-oblong, less than 5 cm. long; receptacle small, few- 
flowered; stems often quite spiny . . . . . .. 7. S. microphylla. 
Perianth segments of the staminate flowers not incurved, usually reflexed, and 
more than 3 mm. long; receptacle not strongly developed, with few decidu- 
ous bracts; peduncle approximating petiole in length. 
Plant not at all glaucous; spines straight, acicular or bristle-like, usually 
abundant when present; berry greenish black. 
Leaves ovate, usually cordate; peduncles longer than the petioles; spines 
stout; black. o ; 5. 1:8 5 3 CHE S 8. S. Sieboldii. 
Leaves ovate-lanceolate, scarcely cordate; peduncles shorter than the 
petioles; spines when present bristle-like . . . . 9. S. scobinicaulis. 
Plant glaucous, at least on pedicels and fruit; berry red or blue-black. 
Stipular auricle not distinct from the petiole; petiole vaginate at base, 
without tendrils; erect, spineless, deciduous shrubs with blue-black 
berries. 
Leaves ovate-lanceolate, narrowed at base, peduncle 1-3 cm. long, 
I2B8owewed = -coro 1/7 3 394 10. S. pekingensis. 
Leaves ovate, broad at base, usually cordate, up to 5 or more cm. long. 
Fetioles glabrous, strinte:- -.... a is 11. S. vaginata. 
Petioles scabrous, papillate pubescent . . . .. 12. S. trachypoda. 
Stipular auricle distinct, ending in tendrils on the larger shoots; climbing 
vines usually with stout, recurved spines. 
Berries red. 
Leaves ovate to orbicular, not long-pointed, not glaucous beneath. 
13. S. china. 
Leaves oblong lanceolate, apiculate, glaucous beneath. 
14. S. megalantha. 
Berries blue-black; leaves usually glaucous below. 
Petiole 1-2 em. long. 
E near apex of the petiole; leaves dvds d gece strongly 
cct o qu a eee E S. menispermoidea. 
Tendrils below the middle of the petiolo; n oval; branches 
seareely Wg3üg. . —— 21 4 2 04:9 ae 16. 8. longipes. 
Petiole rarely 1 cm. long. 
Stipules not large; leaves oval-lanceolate, narrowed at the base, 
glaucous beneath -< o zc. . a 9 sa 17. S. glauco-china. 
Stipules developed into a semicircular auricle; leaves broad at the 
base, usually cordate. 
Auricle extending entire length of petiole; leaves glaucous be- 
neath. 18. S. discotis. 
Auricle extending about half way to blade, leaves not glaucous 
beneath: 36.245. ie 020289090 ex var. concolor. 
Flowers produced on special, leafless branches, sometimes much shat but indi- 
cated by a group of bud scales in the axil of the mature leaf where the flowers 
appear. 
Flower branches simple, normally with one umbel. 
