Part 1, 1918] RUBIACEAE 35. 
cauline leaves sessile or the lowest short-petiolate, mostly ovate to lance-oblong, sometimes 
rounded-ovate, oval, or elliptic, 2-6 cm. long, 0.8-3 cm. wide, obtuse to attenuate at the apex 
or rarely rounded, usually rounded at the base, thin, glabrous on the upper surface or hirsutu- 
lous, especially along the costa, paler beneath and glabrous or sometimes hirsutulous, usually 
ciliolate, 3- or 5-nerved; flowers in dense small few-flowered terminal cymes, the pedicels 6 mm. 
long or shorter; hypanthium at anthesis about 1 mm. long, glabrous; calyx-lobes lance-linear, 
attenuate, at anthesis 3 times as long as the hypanthium or longer, in fruit much exceeding the 
capsule, rarely ciliolate; corolla funnelform, 6-8 mm. long, purple to nearly white, glabrous 
outside, the lobes ovate-triangular, usually less than half as long as the tube, more or less 
white-villous within; anthers exserted; capsule subglobose, 2-3 mm. long, usually broader than 
long, slightly compressed, half inferior, rounded or retuse at the apex, the free portion glabrous; 
seeds oval, concavo-convex or subcrateriform, about 1 mm. long, peltate, coarsely scrobiculate, 
black. 
TYPE LOCALITY: Virginia. 
DISTRIBUTION: Woods or fields, Maryland to Iowa, and southward to Georgia, Alabama, and 
Oklahoma. 
ILLUSTRATIONS: Britt. & Brown, Ill. Fl. f. 3397; ed. 2. f. 3917; Rob. & Fern. Man. f. 914; Bot. 
Cab. pl. 1621. 
28. Houstonia montana (Chickering) Small, Fl. SE. U. S. 1325. 
1903. 
Houstonia purpurea montana Chickering; Small, Fl. SE. U. S. 1325, assynonym. 1903. 
Erect perennial, 6-20 cm. high, the stems usually numerous, stout, simple, or sparsely 
branched above, obtusely quadrangular, glabrous, the internodes mostly shorter than the 
leaves; stipules 2 mm. long or shorter, scarious, broadly triangular, rounded at the apex, entire, 
purplish; cauline leaves sessile, oval, broadly ovate, or ovate-oblong, 1—2.5 cm. long, 4-12 mm. 
wide, rounded to very acute at the apex, broadly rounded to obtuse at the base, glabrous, or 
scaberulous above along the costa, scaberulo-ciliolate, paler beneath, mostly 1l-nerved, the 
lateral nerves obsolete; flowers few, in a small dense leafy terminal cyme, the pedicels 6 mm. 
long or shorter; hypanthium about 1.5 mm. long at anthesis, glabrous; calyx-lobes ovate- 
oblong or lance-oblong, acute, less than twice as long as the hypanthium, in fruit longer than 
the capsule; corolla funnelform, 9-11 mm. long, purple, glabrous outside, the lobes ovate-oval 
or oblong-ovate, obtuse, white-villous within, more than half as long as the tube; anthers ex- 
serted; capsule subglobose, 3 mm. long, usually broader than long, slightly compressed, half 
inferior, retuse at the apex, the free portion glabrous; seeds concavo-convex, oval, about 1.3. 
mm. long, peltate, scrobiculate, black. 
TYPE LOCALITY: Summit of Roan Mountain, North Carolina. 
DISTRIBUTION: Summits of the highest mountains of western North Carolina and eastern 
‘Tennessee. 
29. Houstonia canadensis Willd.; R. & S. Syst. Veg. 3: 527. 1818. 
Houstonia ciliolata Torr. Fl. U.S. 1: 173. 1824. 
Hedyotis ciliolata Torr.; Spreng. Syst. 4: Cur. Post. 40. 1827. 
Anotis ciliolosa G. Don, Gen. Hist. 3: 535. 1834. 
Oldenlandia purpurea ciliolata A. Gray, Man. ed. 2. 173. 1856. 
Houstonia longifolia ciliolata Wood, Class-Book ed. 1861. 403. 1861. 
Houstonia purpurea ciliolata A. Gray, Man. ed. 5. 212. 1868. 
Erect perennial, 1-2.5 dm. high, sometimes decumbent at the base, the stems few or 
solitary, simple, or sparsely branched above, often glabrous above; stipules scarious, whitish, 
3 mm. long or shorter, broadly triangular, rounded to acute, usually dentate or laciniate; 
basal leaves present at anthesis and-forming a rosette, the petioles slender, often half as long 
as the blades or longer, ciliate, the blades elliptic to suborbicular, 7-25 mm. long, 3-8 mm. 
wide, rounded to acutish at the apex, usually acute to attenuate at the base, hirsutulous or 
glabrate on the upper surface, paler beneath and glabrate, ciliate; cauline leaves sessile or 
nearly so, linear to oval-oblong, 8-25 mm. long, 6 mm. wide or narrower, hirsutulous or glabrous 
on the upper surface, glabrous beneath, usually ciliate; flowers in small, lax or dense, terminal 
cymes, the pedicels sometimes 8 mm. long but usually much shorter; hypanthium at anthesis 
about 1 mm. long; calyx-lobes linear, acute, usually scaberulo-ciliolate, more than twice as long 
as the hypanthium, in fruit usually longer than the capsule; corolla funnelform, 6-8 mm. long, 
