-is black aud somewhat модер}, but edible, HUS 
46 UNITED STATES AND MEXICAN BOUNDARY. 
CzANoTHUS DENTATUS, Torr. & Gray, Fl. l. c.; Lindl. & Ра, Fl. Gard. 1, p. 17, t. 4. 
(Taste X.) Sandy soils around Monterey, California; Parry. А low bush. Our specimens 
correspond with Douglas's plant, except that in the latter the flowers are said to be white, 
whereas they are blue in the former. "They had, no doubt, faded in the specimens from which 
the original description was drawn. 
CEANOTHUS CRASSIFOLIUS, (n. sp.): fruticosus, erectus ; ramulis teretibus albo-tomentosis ; foliis 
ovatis obtusiusculis integerrimis crassis penninerviis subtus dense albo-tomentosis glabris minute 
papillaris opacis; thyrsis subsessilibus brevibus subumbelliformibus densifloris. (TABLE XI.) 
Mountains south of Los Angelos, February; Parry. А shrub 4 to 5 feet high, much branched. 
Leaves 1—14 inch long, remarkably thick and coriaceous, revolute on the margin when dry, 
pale dull green above and appearing rough like shagreen under a lens; petiole 2—3 lines long, 
thick. : Clusters of flowers terminal, and in the axils of the upper leaves. Calyx and corolla 
white. Ovary marked with 3 minute protuberances, Fruit not known. 
FRANGULA CanoLINIANA, Gray, Gen. Ill. 2, p. 118, t. 167. Rhamnus Carolinianus, Walt. Fl. 
Car. p. 101. Banks of streams, Los Muros, &c., Western Texas; Bigelow. 
FRANGULA CALIFORNICA, Gray, l. c., Ф Pl. Wright. 2, p. 28: Mountain ravines near Camp 
Bache, Western Texas; Bigelow. Sonora; Schott, Capt. E. К. Smith. Monterey and San 
Diego, California; Parry. Variable in the form and pubescence of the leaves. We quite agree 
with Dr. Gray, that this species includes Rhamnus Californicus, Esch., R. oleifolius, Hook., R. 
laurifolius, Nutt. R. leucodermis, Nutt., and В, tomentellus, Benth. 
RHAMNUS cRocEUS, Nutt. in Torr. & Gray, Fl. 1, p. 261. Around Monterey and San Diego, 
also on the mountains of southern California; Parry. The leaves vary from 4 to 14 inch in 
length, and from obovate-oblong to broadly ovate. The under surface is always yellowish. 
The fruit in Dr. Parry's specimens is all 2-seeded. 9 ber, 
ZizYPHUS PARRYI, (п. sp.): glabra; ramis spinosis ; foliis obovatis integerrimis sub-coriaceis 
penninerviis ; pedunculis unifloris, fructiferis recurvis; drupa sub-exsucca ovata apiculata 3-locu- 
lare; nuce crassissima ossea 3-loculari 3-sperma. Gravelly ravines near San Felipe, California, 
June (in fruit); Parry. It was afterwards found at the same place by Mr. Thurber. А shrub 
4 一 6 feet high, much branched; the branches smooth, flexuous, and armed with numerous 
slender leafy spines. Leaves 8—12 lines long, obtuse or sometimes retuse, abruptly tapering at 
the base into a short petiole; stipules minute, subulate, deciduous. Only a solitary flower was 
found. This was-minute and pentamerous, the very small concave petals partly embracing the 
stamens. Peduncles solitary, or sometimes 2 一 3 together, arising from short branches or spurs; 
those of the fruit about half an inch long and recurved. Drupes 6 一 8 lines long, with a short 
abrupt point, lemon yellow, the pulp very thin. Nutshell extremely thick and hard. Seeds 
narrowly oblong. Albumen very thin. Embryo linear, oblong, green. This must be a very 
rare plant, as it has been found but twice, and in both cases near the same spot. In its nearly 
dry 3-celled fruit and extremely thick shell it resembles Z. xylopyra of India. 
ZIZYPHUS OBTUSIFOLIA, Gray, Gen. Ill. 2, р. 170, t. 163; Ф Pl. Lindh. 2, p. 168, Dry hills 
and banks from El Paso to Eagle Pass, on the Rio Grande; March—June ; abundant. 
Zuzenus LYCIOIDES, Gray, l. c. Near Eiceario, on the Rio Grande, June (in fruit) ; Parry. 
Valley of the Gila; Thurber. Dr. Gregg found it between Matamoras and Маріпі. Тһе fruit 
Ул. 4€ vem / IL. 2 an 22687 © % ra 
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