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SHEPHERDIA ULMACE 2 601 
CELTIS 
I SHEPHERDIA Nutt. Gen. ii, 240. 
Shrubs with opposite petioled leaves and small dioecious or 
polygamous flowers subspicate at the nodes of the previous season’s 
growth, or axillary: the pistillate fewor solitary. Pistillate flow- 
er- with an urn-shaped or ovoid calyx bearing an 8-lobed disk 
at its mouth which nearly closes it. Style somewhat exserted. 
Calyx of the staminate flowers 4-parted. Stamens 8, alternating 
with as many lobes of the disk. Fruit drupe-like, the fleshy base 
of the calyx enclosing a nut or achene. 
S. Canadensis Nutt. Gen. ‘ii, 240. A thornless shrub with dark 
brown or grayish bark, the young shoots brown scurfy: leaves ovate or 
oval, obtuse, entire, rounded at base, 12-18 lines long, green and sparingly 
stellate-scurfy above, densely silvery and brown-stellate beneath, on peti- 
oles 2-6 lines long: flowers in short spikes at the nodes of the twigs, yel- 
lowish: heads globose, less than a line in diameter, forming in summer, 
expanding with or before the leaves the following spring: calyx about 2 
lines broad when expanded: fruit oval, red or yellowish, 2-3 lines long, 
the nut smooth. In the mountains, Brit. Columbia to eastern Oregon and 
across the continent. a 
S. argentea Nutt. l. c. A shrub 6-18 feet high, the twigs often ter- 
minating in thorns: leaves oblong to oblong-lanceolate, 1-2 inches long, 
obtuse, usually cuneate-narrowed at base, densely silvery-scurfy on both 
sides, 2-6 lines long: flowers fascicled at the nodes, the globose buds very 
silvery: fruit ovoid to oblong. sour, edible. Alaska to California and 
Minnesota. 
OrpErR LXXXI ULMACE/ Mirbel Elem. ii, 905. 
Trees or shrubs with alternate leaves with small fugaceous 
stipules, and small monoecious, dioecious, polygamous or per- 
fect flowers in lateral or axillary clusters, or the pistillate sol- 
itary. Calyx 3-9-parted or of 3-9 distinct sepals. Stamens, 
in our species, as many as lobes of the calyx and opposite them: 
filaments straight: anthers longitudinally dehiscent, Ovary 1- 
celled, rarely 2-celled, mostly superior, with a solitary pendu- 
lous anatropous or amphitropous ovule: styles or stigmas 2. 
Fruit a samara, drupe or nut. Embryo straight or curved, 
with little or no albumen. Cotyledons mostly fiat. — 
1 CELTIS L. Sp. 1043. 
Trees or shrubs with alternate leaves and small monoecious or 
polygamous flowers borne in the axils of leaves of the season, 
the staminate clustered, the pistillate solitary or 2-3 together. 
Calyx 4—6-parted or of distinct sepals. Stamens as many as se- 
pals: filaments erect, exserted. Ovary sessile: stigmas 2, recurv- 
ed or divergent, tomentose or plumose. Fruit an ovoid or 
globose drupe. 
C. occidentalis L. Sp. 1044. A tree or shrub 4-120 feet high, with 
dark brown rough. bark, the twigs glabrous: leaves ovate or ovate-lanceo- 
late, sharply serrate, mostly thin, acute or acum nate, somewhat oblique 
and 3-nerved at base, pinnately veined, 1!4-4 inches long, glabrous above, 
pubescent. at least on the veins, beneath: staminate flowers numerous; 
