Deciduous or evergreen shrubs or small trees, leaves simple, alternate, entire, exstipulate,
short-petioled [sessile], glabrous. Inflorescences terminal or axillary racemes, each flower in …

Herbs or shrubs [rarely small trees], with quadrangulate or terete stems. Leaves opposite,
seldom alternate or whorled, simple, entire, exstipulate. Flowers regular or irregular, axillary …

358 ANNALS OF THE MISSOURI BOTANICAL GARDEN slender, minutely downy, pale
mouse-gray; hymenium colored like the pileus, remotely ribbed, with the ribs radiating from …

Annual or perennial, stemless to caulescent, usually rosulate, scapose ter-restrial herbs of
high-hydroperiod soils [rarely aquatic]. Roots mostly slender, diffuse-fibrous, with root hairs …

Shrubs or trees with simple, alternate, exstipulate leaves. Flowers com-plete, showy, borne
singly in the axils of the leaves. Sepals 5 (6), im-bricate (quincuncial: 2 outside, 2 inside, 1 in …

Annual to perennial [often suffrutescent] herbs [shrubs] or occasionally trees; branches
usually divaricate, with angled or swollen nodes, growth sympodial. L'eaves opposite …

Trees, shrubs, or herbs [rarely vines]; pubescence of stellate and/or simple hairs; inner bark
usually fibrous; mucilage cells and/or cavities and/or ducts in the axis and/or leaves and …

The genus Ruellia of the Acanthaceae contains upward of two hundred species, a majority
of which are tropical or near-tropical and, collectively, occur entirely around the earth. In the …

Calyx cleft to the middle or less into broad lobes or teeth. Leaves broad, generally rounded
or cordate, truncate, peltate or unevensided at the base. Young shoots, leaves, and …

100 JOURNAL OF THE ARNOLD ARBORETUM [vol. IV flowers with 10, not 20 stamens, and
smaller fruit which is the smalle of all the described species in the Crus-galli group. I take …