Tas. 5615. 
HELIOTROPIUM convotvuaceum. 
Convolvulus-flowered Heliotrope. 
Nat. Ord. BoraGInEm.—PENTANDRIA MonoGyYnta. 
Gen. Char. Calyx 5-partitus v. 5-dentatus, persistens. Oorolla hypo- 
craterimorpha, fauce pervia interdum barbata, laciniis plica simplici (raris- 
sime dente interjecto) donatis. Stamina 5, tubo corolle inserta. Ovarium 
4-loculare ; stylus brevis, stigmate incrassato. Nucule 1-loculares, demum 
separabiles, receptaculo communi 0. Semina exalbuminosa, embryone in- 
verso, cotyledonibus planis.—Herbe v. suffrutices, glabre pilose v. hispida. 
Folia sepius alterna, integra v. denticulata. Cyme unilaterales. Flores 
albi v. purpurascentes. 
HetrorropruM convolvulacewm ; annua, hispido-pilosa, caule ramoso ramis 
patentibus adscendentibus, foliis alternis ovato-oblongis v. oblongo- 
lanceolatis integerrimis acutis enerviis, floribus axillaribus subsolitariis 
y. in cymas breves paucifloras dispositis, corolla tubo hispido, limbo 
amplo explanato, stigmate capitato apice setoso, nuculis dimidiato- 
reniformibus perforatis. 
Hetrorropium convolvulaceum. A. Gray in Proce. Am. Acad. v. 5. p. 340, 
et Mem. Amer. Acad. v. 6. p. 403. 
Evrzoca convolvulacea. Nutt. in Am. Phil. Trans. N. Ser. v. 5. p. 189. 
DC. Prodr. v. 9. p. 559. Hook. Ic. Pl. v, 7. t. 651. : 
A curious and beautiful American annual, grown by Mr. 
Thompson, of Ipswich, with whom the specimen here figured 
flowered in September of the present year; it is a native of 
the Southern United States, New Mexico, and Arkansas, in 
which last State it was discovered by Nuttall, growing on 
sandy plains. The flowers, which are most abundantly pro- 
duced, are sweet-scented, and open towards sunset like those 
of mirabilis. 
Descr. A much-branched, suberect annual, a span to two 
feet high, hoary all over with short rigid simple hairs. Stem 
and branches terete. Leaves half to one and a half inches 
long, very variable in shape, linear-oblong ovate ovate-orbi- 
cular or lanceolate, acute, narrowed or rounded at the base, 
DECEMBER Ist, 1866. 
