Solanaceae. 
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1196. (4.) Datura Stramonium L. Spec. Plant. I (1753), p.179. 
— Aschers.-Schweinf. Ill. Flor. d’Eg., p. 113 no. 761. — Sickenberg. 
Contrib. Flor. d’Eg., p. 262. — Aschers.-Schweinf. Primit. Flor. Mar- 
maric., p. 660 no. 231. — Dun. in DC. Prodrom. XIII, fase. I p. 540. 
— Mart. Flor. Brasil. X, p. 163. — A robust erect annual. Stem 
terete, smooth, dichotomously branched above. Leaves ovate, more 
or less coarsely toothed or lobed, up to 18 cm long and 6'/, cm 
wide, acuminate, unequal at the base, flaccid, slightly hairy when 
young. Flowers erect in the forks of the branches; pedicels short. 
Calyx 21'/, em long, persistent at the base; teeth 5, triangular. 
Corolla 6—8 cm long, plicate in bud, tubular-funnel-shaped, white; 
lobes 5, spreading or recurved, acuminate. Stamens included. Ovary 
pyramidal, 4-lobed. Capsule about 5 cm long, erect, ovoid, thickly 
clothed with spines. Seeds about 4 mm long, reniform. — Flow. 
March to April. 
M. ma. N. d. N. v. Often cultivated and naturalized. 
Local name: nefir; semm-el-fir; datira; tatura. 
Cosmopolitan. 
491. (8.) Hyoseyamus Linn. 
Calyx tubular-campanulate or urceolate, shortly 5-fid; accrescent, 
rigidly many ribbed. Corolla funnel-shaped, sometimes split down 
one side; limb oblique, 5-fid; lobes wide, imbricate, more or less 
unequal, patent. Stamens inserted about the middle of the corolla- 
tube, usually exserted; filaments filiform, slightly dilated at the base; 
anthers ovate or oblong, dehiscing longitudinally. Disk none or 
small. Ovary 2-celled, sometimes thickened at the apex; style fili- 
form; stigma capitate; ovules many. Capsule 2-celled, circum- 
scissile. Seeds more or less compressed, tuberculate or scrobiculate; 
embryo near the margin, much curved; cotyledons semiterete. — 
Erect annual or biennial herbs, hairy or glabrous. Leaves sinuate, 
dentate or incised, rarely quite entire. Flowers usually unilateral, 
the lower axillary, the upper in a scorpioid spike or raceme. Corolla 
often reticulately veined. 
Species about 9, the others in Central Asia, the Mediterranean region 
and Canary Islands. 
A. heaves ovate rhombieiv: atmeas militaire se Sst i 1. H. muticus. 
iB. ueaves, ovate: orbiculfietijn. .f sare wires) Sh 2. H. albus. 
C. Leaves oblong. 
T. Lieayeaxciliate,. is, kcersrher toveeust bbb othe 07 GPlban eatad 3, H. pusillus. 
Ti, Leavesinoticiliaten. 15. ssp < bem boots tw eee 4. H.Boveanus. 
