170 
BOTANY. 
known to exist in certain Labiatse and Rubiaceee. De Candolle (1. c.) asks whether his section 
Stegnocarpus of Coldenia ought not to constitute a proper genus. If he had had as complete a 
series of specimens as we possess, no doubt he would have made the separation. It belongs to 
the tribe Ehretieaa, but has a fruit like that of some Eritrichia. The Stegnocarpus has a deci¬ 
dedly woody base, and seems to be usually prostrate. The leaves are 5-8 lines long (including 
the petiole) and 1-3 lines broad, ovate or oblong, rather acute at each end, and thickly clothed 
with appressed whitish hairs. The flowers are often solitary, but sometimes two or three 
together. Calyx 5-parted below the middle; the lobes subulate from a rather broad base. Co¬ 
rolla about four lines long ; the tube^ample, and a little longer than the calyx; the lobes cren- 
ulate. Stamens five, rather unequal: filaments subulate, usually inserted near the base of the 
corolla: anthers oblong. Ovary scarcely lobed: style compressed, about as long as the stamens, 
cleft to the middle ; the segments filiform, erect, strongly capitate. Fruit consisting of four 
closely fitting nutlets, which separate at maturity. When young, there is often more or less 
pubescence towards the summit; but it finally disappears, and the fruit becomes smooth and 
shining on the back. The sides (where they come in contact) are somewhat wavy. The peri¬ 
carp is coriaceous, and there is little or no albumen. 
PTILOCALYX, (n. gen.) Calyx 5-parted nearly to the base; the segments subulate-filiform, 
plumose with spreading hairs. Corolla campanulate-salverform ; the throat naked. Stamens 
five, inserted near the base of the tube. Ovary somewhat 4-lobed, 4-celled, with an obscure 
glandular ring at the base. Style filiform, terminal, 2-parted: stigmas minute, simple. Fruit 
coriaceo-chartaceous, one-celled (by abortion), with vestiges of three other cells. Seed solitary, 
terete; the embryo with little or no albumen. A low, much branching shrub, with small, ovate, 
entire, and somewhat fascicled leaves, and white flowers in short capitate terminal spikes. The 
name alludes to the feathery segments of the calyx. 
Ptilocalyx Greggii. (Plate YIII.) Western Texas; April. Common in New Mexico; Mr . 
Wright and Dr. Parry. (It is No. 492 of Mr. Wright’s distributed collection.) Near Buena 
Yista, &c., Mexico; Dr. Gregg. A shrub of an ashy gray color, sometimes attaining the height 
of three feet, the bark separating in loose shreds. Leaves 3-5 lines long, thickish, on short 
petioles, revolute when dry. Heads of flowers half an inch in diameter. Calyx longer than 
the corolla; the segments villous-plumose with spreading hairs. Corolla white; the border 
obtusely 5-lobed. Stamens equal, included; filaments subulate, glabrous; anthers ovate, 2- 
celled. Ovary globose-ovate, glabrous, 4-celled, with an ovule suspended from the summit of 
each cell. Style 2-cleft about one third of its length. Fruit brown and shining, retrorsely 
hispid near the summit, crowned with the persistent style; only one of the cells fertile, the 
others very indistinct and collapsed; their place being indicated externally by a broad stripe on 
one side. This plant, which seems to have been hitherto undescribed, agrees in many respects 
with Ehretia; but differs in the remarkable fruit, which is unlike that of any other Boraginea. 
EDDYA, (n. gen.) Calyx deeply 5-parted. Corolla salver-form, with the throat naked. Sta¬ 
mens inserted towards the summit of the tube of the corolla. Style terminal, elongated, 2- 
cleft: stigmas capitate. Ovary 4-lobed. Nutlets 4, globose-ovate, cohering by the inner angle, 
but finally separating, muriculate-scabrous. Cotyledons ovate, entire: radicle very short: 
albumen none, or very thin.—A small, prostrate, much branched, and very hispid undershrub, 
with crowded linear entire revolute leaves, and small axillary and solitary white flowers. Named 
in memory of Caspar Wistar Eddy, M. D., formerly of New York, a zealous and promising 
botanist, who died young, soon after publishing a catalogue of the plants growing around 
Plandome, Long Island. 
Eddya hispidissima. (Plate IX.) Ehretia? hispida, of the 1st edition of this report. Com¬ 
mon on the Rio Grande about El Paso. It is the same as No. 845 of Mr. Wright’s Texan col¬ 
lection, (1849) and No. 1557 of his New Mexican collection. The plant is much branched 
from the base, which is decidedly woody. Leaves 3-5 lines long, acute, and very hispid with 
