C0NV0LVULACEA5. (CONVOLVULUS FAMILY.) 351 
tube of the corolla cylindrical (ventricose after flowering), twice the 
length of the obtuse spreading lobes and of the ovate obtuse calyx- 
lobes, in fruit borne on the summit of the depressed pod; scales ovate, 
cut-fringed; stamens shorter than the lobes of the corolla. (C. Cepha- 
Idnthi, Engelm.) — Swamps, common through the Western States, 
on Cephalanthus and various tall herbs. 
* * Ovary more or less pointed at the apex (with a stylopodium): pod 
brownish, of firmer texture. 
— Flowers sparingly bracted: calyx 4 - 5 -cleft. 
4. C. umbrosa, Beyrich (fide Engelm.). Flowers pedun- 
cled m umbel-like cymes; tube of the (mostly 4-cleft) fleshy corolla 
cylindrical , as long as the ovate acutish and minutely crenate inflexed 
lobes, and the acute keeled calyx-lobes; scales minute and few-toothed , 
appressed; pod depressed-globose, covered with the remains of the co¬ 
rolla. (C. Cdryli, Engelm.) — Prairies and barrens, Western States. 
Allied to the last. 
5. C. Gronovii, Willd. Flowers peduncled, in close or open 
cymes; corolla bell-shaped, the tube longer than the ovate and obtuse 
entire open lobes and the ovate obtuse and somewhat keeled calyx- 
lobes; scales large and converging , copiously fringed, confluent at the 
base ; the remains of the corolla persistent at the base of the globose 
pod. (Calyx and corolla more or less dotted with pellucid glands: 
these are wanting in C. Saururi, Engelm., which also has a more open 
corolla, more oblong lobes, &c.; but it is probably no more than a 
variety of the present species.) (C. vulgiv&ga, Engelm. C. Ameri¬ 
cana, Pursh, &c. C. umbrosa, Torr. FI. JY. Y.) — Low grounds, ex¬ 
tremely common, especially northward and eastward; chiefly on 
herbs. Aug., Sept. — C. rostrXta, Shuttlew., a larger-flowered spe¬ 
cies with a pointed pod, common in the Alleghanies from Maryland 
southward, is probably to be found in Pennsylvania. 
Calyx of 5 separate broad sepals, imbricated beneath with several 
nearly similar bracts : remains of the corolla in fruit borne on the 
globose somewhat pointed pod. (Lepidanche, Engelm.) 
6. C. compacta, Juss. Flowers sessile, in dense clusters; 
bracts (4 - 5) and sepals orbicular, concave, appressed , slightly crenate, 
much shorter than the slender cylindrical tube of the corolla; stamens 
shorter than the linear-oblong spreading lobes of the corolla; scales 
pinnatifid-fringed. (C. coronkta, Beyrich , fide Engelm.) — Dry ground, 
on shrubs, &c., S. Penn, and southward. 
7. C. glomerata, Choisy. Flowers sessile, very densely 
clustered, forming knotty masses closely encircling the stem of the fos¬ 
ter plant, much imbricated with scarious oblong bracts with rccurved- 
spreading tips; sepals nearly similar , shorter than the oblong-cylin¬ 
drical tube of the corolla; stamens nearly as long as the oblong-lan¬ 
ceolate spreading or reflexed lobes of the corolla; scales large, fring- 
