CATALOGUE. 137 
RUBIACEZ. 
Bouvarpia* nirteLta, H. B. K., var. quaternirouiA. (B. quaterni- 
folia, DC., Prod. vol. iv, p. 865).—Low shrub, often much branched; older 
shoots clay-colored, younger dark green and puberulent; leaves short-peti- 
oled, thickish, lanceolate to broadly oval, acute, commonly three in a whorl, 
sometimes more, or again reduced to two, opposite, slightly hispid on upper 
surface, nearly glabrous on lower (except on the principal veins), and ciliate 
on the margin, 1-2’ long, 5-10’ wide; corymbs trichotomous. Corolla 
12-18” long, glandular puberulent, smooth or nearly so in the throat, lobes 
1-2” long; stamens sessile, oblong and slightly emarginate at base; calyx 
covered with a short, stiff, white pubescence, tube half as long as the acute, 
narrowly lanceolate lobes.—Camp Bowie, Ariz., at 5,500 feet altitude 
(478). I can find no description that exactly answers for this plant, yet 
it comes nearest to Bouvardia quaternifolia, DC., which, with B. Jaquinii, 
I am persuaded (from the description) are merely forms of hirtellu. The 
species varies within wide limits. 
MirraAcaRPIUM} BREVIFLORUM, Gray (PI. Wright. 2, p. 68)—Annual, 
4—8' high, unbranched, slightly four-angled, nearly smooth; leaves 10-14” 
long, 2-4” wide, having between their bases a dense capitulum of small, white 
flowers; bracts bristle-like, very delicate; calyx-teeth unequal, the two longer 
twice as long as the calyx-tube, subulate, the two shorter very small; terminal 
head of flowers, according to Dr. Gray, is subtended by four leaves— 
Sanoita Valley, Arizona (605). 
* BoUVARDIA, Salisb.—F lowers in clusters at the end of the branches. Calyx with 4 slender lobes. 
Corolla with a long and slender or somewhat trumpet-shaped tube and 4 short spreading lobes, valvate 
in the bud. Anthers 4, almost sessile in the throat. Style 1; stigma of 2 flat lips. Pod small, globular, 
2-celled; seeds wing-margined.—Gray, in Field, Forest, and Garden Botany. 
t MITRACARPIUM, Zuccar.—Flowers hermaphrodite, capitate. Calyx-tube turbinate-oboyoid, or 
sub-globose; teeth 4-5. Two often longer than the others, sometimes with smaller ones between, per- 
sistent. Corolla salver- or funnel-shaped, tube often encircled inside by a hairy ring; lobes of the limb 
4, valvate, spreading. Stamens 4, inserted on the throat of the corolla; anthers fixed by the back. Disk 
fleshy. Ovary 2-, rarely 3-celled. Style with two shertish, linear branches; amphitropous ovules soli- 
tary in the cells. Fruit didymous, membranaceous, opening transversely at or below the middle, the 
upper part going with the calyx and exposing the seeds, the septa remaining in the other portion. Seeds 
opposite, linear-lanceolate or ovate, the upper ones often the longer, the setose, shcathing stipules connate 
with the petiole. Flowers in dense heads, minute, white, often intermixed with bristles.—BentTuamM & 
Hooker 
