1928 | ACANTHACEAE 
ceous from a lanceolate base, 6-8 mm. long: 
corolla oe : Hue lo ong; in about 10 mm. 
wide:  capsu long.—River- 
swamps, nm Plain, Fla. and Ga. —Spr. 
2. D. angus (A. Gray) Small. Stem 
1-2 dm. tall: poe numerous; blades 1-2.5 
m. long, spatulate below to linear-elliptie 
e 
or linear above: calyx-lobes linear-subulate, 
1 long d lim ut 10 mm 
wide: eapsule 7-8 mm. long. E a and 
open sandy hammocks, S Fla.—All yea 
3. D. pic eid pie Kuntze. Stem 
1-3 dm. tall: s few; blades 1-3 em. 
long, Res E^ cuneate _below, elliptic 
above: calyx-lobes 12-15 x long: corolla-limb 15 mm. wide: capsule 10-13 
mm. long — Sandhills and DB dde Coastal Plain, Fla. to Va.—Spr.-fall. 
. RUELLIA [Plum.] L.  Cauleseent herbs. Leaf-blades entire or 
toothed. Flowers axillary or sometimes in terminal clusters. Calyx 5-lobed, 
the lobes narrow. Corolla Ls i E Capsule 6-20 seeded.—About 200 
species, mostly tropical America 
Flowers or flower-clusters sessile or essentially so. I, PARVIFLORAE. 
Flowers or flow aspire peduncled. II. PEDUNCULATAE. 
I. PARVIFLORAE 
Calyx- lobes linear d or with filiform Us longer than the capsule, 
Corolla 4—6 c long. 
Stem Temm tháh 1 dm. tall. 1. R. humilis. 
Stem over 2 dm. tall. l 
Leaf-blades sessile or essentially so. 2. R. ciliosa. 
Leaf-blades manifestly petioled. 
green or purple- dus p un blades not 
Leat-blades thick: stem B cue fistulose. 3. R. succulenta. 
Leaf-blades thin: stem woody, not fistulose. 4. rviflor 
Plant grayish-pubescent: leaf- blades. prominentl 
eath. 
ls en 5. R. hybrida. 
Coro T- -10 c lon 6. KR. noctiflora. 
Calyx- o incon. -lanceolate or broadly linear, scarcely longer 
. than the capsule. (. Iè. strepens. 
II. PEDUNCULATAE 
Erect gregarious plant with narrow leaf-blades l 8. R. malacosperma. 
. R s Nutt. Stem 1-3 em. tall, hirsute or villous-hirsute, or almost 
wanting: leaf- a spatulate to o or oval, 3—10 em. long: calyx hirsute; 
lobes linear-subulate, 15-20 mm. long: co- 
rolla blue or nearly white, d em. long; 
tube 1-2 mm. thick: capsule 15-17 mm. 
long.—Sandy . soil, Eum Plain, Fla. to 
Miss. and Ga.—Spr.-fal 
2, R. ciliosa Pursh. Stem 2-6 dm. tall, 
hirsute: leaf-blades oval, ovate, or elliptie, 
2-5 cm. long: 
subulate, 15-20 mm. long: corolla aes 5-7 
em. long: tube 1-2 mm. thick: eapsule 10— 
15 mm. long.—Dry soil, various i ues 
Fla. to Tex., Kans., Mich., and N. J. —Spr.— 
fall. 
3. R. succulenta Small. Stem 1.5-5 dm. 
tall inconspicuously puberulent: leaf-blades 
