1254 RUBIACEAE 
Flowers solitary on terminal pedicels or ae on pedicels axillary to leaf-like bracts, 
not aggregated into a termina al eym 
Pedicels erect in fruit. I. CAER 
Pedicels recurved in fru II. Horeca 
JYlowers borne in terminal, Nore or less effuse cymes. III. ANGUSTIFOLIAE. 
I. CAERU 
Plant oe by slender horizontal Sree or creeping 
lant T sepals lanceolate: corolla-tube glabrous 
within. 
Plant diffusely. E sepals elliptic: corolla-tube pu- 
bescent withi 
Plant annual, with slender roots. 
ene much surpassed by the corolla-tube: capsule about 
ualling the sepals. 
Sepals about equalling the corolla-tube: capsule much ex- 
ceeded by the sepals. 
1. H. caerulea. 
2. H. serpyllifolia. 
3. H. pusilla, 
4. H. minima. 
II. ROTUNDIFOLIAE 
Plant prostrate, usually in light-green mats: Gron bright- 
white, starry. 5. H. procumbens. 
III. ANGUSTIFOLIAE 
Sepals fully as long as the hypanthiu 
Sepals conspicuously surpassing the capsule. 
less than twice as long as the sepals: sepals 
6. H. lanceolata. 
Corolla over twice as long as the sepals: sepals 2-3 
S epals subulate to HO OERE during anthesis: 
corolla-tube 6-7 mm ng. 
gaa r ovate to ovate-lanceolate during anthesis: 
: 
H. purpurea. 
rolla-tube 9-11 8. H. montana. 
Sepals slightly reper the capsule. 
Ho especially those of basal leaves, conspicu- 
ously e 
Leaf-blades ‘perfectly glabrous, at least never ciliate. 
Corolla eom m . long: mature hypanthium and calyx 
Be 
9. H. canadensis. 
10. H. longifolia. 
Corolla 4.5.5 mm. DOE: mature hypanthium and i 
x 2.5-3 mm. lon 11. H. tenuifolia. 
Sepals shorter iun the Bn nthiu 
Ste rect or ascending, sometimas diffusely branched at 
se, the branches neither spreading nor pros- 
trate. 
C apsule much longer than broad, 2.5-3 mm Tod 12. H. angustifolia. 
Capsule fully as broad as long, 1-1.5 mm lon 13. H. filifolia. 
Stem n oe d at the base, the branches ae or 
spre 14. H. pulvinata. 
. H. caerulea L. Plant often pue e x slender, 2-15 cm. tall: leaf- 
blades. oval, ovate, or spatulate, 2— m. long: eorolla lilac, n or ane. 
except the yellow eye, lobes 5-7 mm. ee / 
capsule 3—4 mm. wide.—(BLUETS. INNO- 
CENCE.)—Damp grassy n and meadows, 
various provinces, Ga. to La., Ont, N. $. 
and Miquelon.—Spr.-sum. 
serpyllifolia Michx. Plant matted, 
the stems repne: leaf-blades ovate, ov val, 
1-6 mm. 
ong: corolla 
ae duro -blue, Qu. the onem Or 
white eye ds a ls 7 mm. long: e e 2-3 
mm. wide. tops n da a lopes, Bine 
Ridge to Appalachian Piateau, Ga. 
Va. and Pa.—Spr ncc locally 
into the Coastal Plain 
usilla Schoepf. Plant 1-10 em. tall, sometimes sparingly branched: 
win blades oval, elliptie, or ovate, or sometimes narrowly spatulate to nearly 
