66 
dense often in loose inflorescence: fruit covered with prickles when young. —In va- 
rious places in east and south Texas, such as Dallas, Larissa, and in Gillespie County 
(Jermy). Resembles very much a low shrubby form of 4. glabra. 
5. UNGNADIA Endl. 
Shrub or small tree, with alternate odd-pinnate exstipulate leaves, 3 
to 7 ovate-lanceolate acuminate pinnately-veined reticulated serrate 
leaflets, fascicles of rather large and showy rose-colored flowers appear- 
ing with the leaves from the axils of the preceding season, fimbriate- 
crested petals, a large coriaceous stipitate 3-lobed smooth pod, and large 
nearly spherical dark-brown smooth and shining seeds. 
1. U. speciosa Endl. (MEXICAN BUCKEYE. )—A shrub or very small tree common 
along rocky valleys and in the mountains from the valley of the Trinity through 
western Texas to New Mexico. The seeds or “beans” are in shape and size much 
like small chestnuts and poisonous. 
6. SAPINDUS Tourn. (SOAPBERRY.) 
Trees, with alternate abruptly pinnate exstipulate leaves, smal] and 
regular white or whitish flowers in axillary racemes or panicles, or even 
ample terminal compound panicles, and a berry-like fruit formed of a 
single carpel.—Sometimes 2 carpels ripen, and rarely all 38, when the 
fruit is 3-lobed. 
1. S. marginatus Willd. Leaflets 9 to 18, opposite or alternate, ovate-lanceolate, 
unequal-sided, strongly veined above: panicles large and dense-flowered: fruit glo- 
bose.—Common along creeks throughout Texas, from Louisiana to New Mexico and 
Mexico, smaller west of the Colorado. <A tree rarely 9m. high west of the Colorado, 
but reaching 15 to 18 m. in the river bottoms of eastern Texas. 
7, ACER Tourn. (MAPLE.) 
Trees or shrubs, with opposite palmately lobed exstipulate leaves, 
small polygamous flowers in terminal racemes, umbel-like corymbs, or 
fascicles, 3 to 12 (usually 8) stamens, and a double samara divaricately 
2.winged above.—The “ sugar maple” (A. saccharinum Wang.) and the 
red” or swamp maple” (A. rubrum L. and a var. Drummondii Sar- 
gent) occur in eastern Texas, but probably not within our eastern 
limit. 
1. A. grandidentatum Nutt. Leaves cordate or truncate at base, rather deeply 3- 
lobed, with broad round sinuses, lobes rather acute, coarsely sinuate-dentate: the 
umbel-like corymb nearly sessile, few-flowered, the pedicels long and nodding.—A 
small maple of the Rocky Mountains, and found in Texas in the mountains west of the 
Pecos. 
8. NEGUNDO Mench. Box-ELDER. 
Trees, with pinnate leaves, dicecious apetalous flowers, sterile ones 
on clustered capillary pedicels, fertile in drooping racemes, 4 or 5 sta- 
mens, and fruit as in Acer. 
1. N. aceroides Mench. A small tree with light-green twigs and very delicate 
drooping clusters of small greenish flowers appearing rather earlier than the leaves: 
