382 
2, A. longifolfa Engelm. & Gray. Stems low, ascending, densely pubescent, with 
elongated slender spreading branches and short internodes: leaves mostly linear- 
elongated (few oblong-lanceolate), all with base and apex acute, scarcely pubescent 
above, glabrate below, short petioled: flowers elongated, short- pedunculate; bracts 
linear-lanceolate: ovary densely white-villous: calyx-tube more or less arcuate, the 
limb very long, lanceolate and acute.—In sandy alluvial deposits of the Rio Grande, 
near and below Eagle Pass. 
PIPERACER. (PEPPER FAMILY.) 
Herbs, with jointed stems, alternate entire leayes and perfect spicate 
flowers entirely destitute of floral envelopes, with 1 to 5 (ours 1) sepa- 
rate or united ovaries. ; 
1. HOUTTUYNIA Thunb. 
Perennial aquatic stoloniferous herb, with thick pungently flavored 
root, subcoriaceous and pellucid-punctate leaves (radical and pe tiolate), 
flowers crowded in a simple conical spadix which is surrounded by a 
5 to 8-leaved persistent and colored involucre (each flower subtended 
by a free colored bract), 6 to 8 free epigynous Stamens, 3 or 4 spread- 
ing stigmas, and a dehiscent pod. 
1. H. Californica 3. & H. Stem simple, erect, 5 to 15 em, high, puberulent. or 
somewhat pilose, with a single broad clasping leaf in the middle, and an axill: wy 
branehlet reduced to one or more slender-petioled leaves: radical leaves oblong- 
oval, cordate at base, 2.5 to em, long (equalling the petiole), glabrous; involucral 
leaves white, obovate-oblong: pod with about 6 round punetulate seeds, (Anemopsis 
Californica Hook.)—From Texas, along the Rio Grande, to California. 
LAURINEH. (LAvuREL FAMILY.) 
Aromatic trees or shrubs, with alternate simple leaves m¢ ystly marked 
with pellucid dots, clustered Howers having a regular calyx of 4 to 6 
colored sepals which are imbricated in 2 rows in the bud and free from 
the I-celled and l-ovuled ovary, anthers opening by 2 or 4 uplifted 
valves, a single style, and fruit a 1-seeded berry or drupe. 
“Flowers perfect, panicled: stamens 12, three of them sterile and three with extrorse 
anthers. 
1. Persea. Calyx persistent: anthers d-celled: evergreen, 
** Flowers dimcious or nearly so: stamens in the sterile flowers 9: leaves deciduous. 
2. Sassafras. Flowersin corymb-or umbel-likeracemes: anthers t-eelled, 4-valved,. 
3. Benzoin. Flowers in umbel-like clusters: anthers 2-celled, 2-valved. 
1. PERSEA Garin, (ALLIGATOR PEAR.) 
Trees with persistent entire leaves, small panicled flowers, 6-parted 
calyx which is persistent at the base of the berry-like fruit, 12 stamens 
in 4 rows, the 3 of the innermost row sterile and gland- like, the rest 
bearing 4-celled anthers (i. ¢., with each proper cell divided transye ersely 
into two) which open by as many uplifted ralves, and anthers of 3 
stamens turned outwards (the others introrse). 
