370 Lobeliaceae 
AA.  Stem-leaves linear or spatulate or cuneate; corolla-lobes erect; style included. 
C. Plant puberulent; leaves all entire; basal-leaves spatulate; stem-leaves mostly 
lear. =.C/-E. C. scabrella Engelm. 
CC. Plant glabrous; at least the basal leaves not entire. 
D.  Stem-leaves spatulate-oblanceolate, dentate; basal-leaves similar in form to 
the stem-leaves; capsule opening near the top. W. 
C. piperi How. 
DD. Stem-leaves linear, entire; basal leaves orbicular to cordate; capsule opening 
near base. W.C. E. C. rotundifolia L. (Blue-bell) 
SPECULARIA (Legouzia) VENUS LOOKING-GLASS 
Annual, pubescent (ours). Leaves alternate, in ours toothed, ovate to orbicular, 
strongly clasping, 12—-25 mm. long. Flowers in groups of 1—3 in the leaf-axils, sessile 
or nearly so; 2-bracted: 4 lowest flowers cleistogamous, small: calyx 3—4-lobed: corolla 
rudimentary. Other flowers larger: calyx 4—5-lobed, its tube narrow: corolla blue or 
purple or violet, |—2 cm. wide (ours). Capsule opening by lateral valves. Seeds in 
ours lens-shaped. (L. speculum—a mirror; referring to the corolla of the European S. 
speculum.) W. E. S. perfoliata DC. 
HETEROCODON 
Annual, slender, in wet places, sparingly hairy (ours). Leaves sessile; in ours 
orbicular, cordate and clasping at base, coarsely many-toothed, 8—16 mm. long. Flow- 
ers solitary in the leaf-axils and terminal, of two forms. Lower flowers cleistogamous: 
with corolla rudimentary. Calyx-tube short; lobes leaf-like, 2-6 mm. long (ours). 
Corolla of upper flowers blue, short-campanulate, 48 mm. long (ours). Capsule obo- 
void, 3-angled, 3-celled, thin walled, membranous, bursting irregularly. Seeds oblong, 
obscurely 3-angled. (Gk. heterosdifferent, kodon—a bell: referring to the 2 forms 
of flowers.) E. H. rariflorum Nutt. 
GITHOPSIS 
Annual. Leaves in ours linear-oblong, coarsely toothed, sessile. Flowers blue, all 
alike. Calyx-tube club-shaped, strongly 10-veined; its lobes long, narrow, leaf-like. 
Corolla-tube campanulate. Ovary 3-celled; stigma 3-lobed. Capsule club-shaped, co- 
rlaceous, crowned with the rigid calyx-lobes, strongly striate-ribbed, opening by a narrow 
hole where style drops off. Seed smooth. W. E. (Githago is another genus of plants, 
Gk. opsis—like. ) G. specularioides Nutt. 
LOBELIACEAE Lobelia Family 
Herbs (ours) or rarely shrubs, often with milky or acrid juice. Leaves alternate, 
simple; stipules none. Flowers perfect, parts in 5’s, in racemes or solitary in the leaf- 
axils. Calyx I-lobed. Corolla-tube sometimes split down 1 side partly or wholly to 
base; limb 2-lipped. Anthers and rarely the filaments united about the style. Ovary 
inferior or V/2-inferior, 1—2-celled; style 1; stigma usually 2-lobed, with a rim of hairs. 
Seeds small. 
A. Plants merely of wet places, not aquatic; flowers blue. 
B. Leaves wavy-denticulate or some of them entire; capsule free from the calyx 
at its top; corolla cleft to the base on one side. LoBELIA (p. 371) 
BB... Leaves all entire; capsule wholly inferior. 

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