PENNELL: PLANTS OF SOUTHERN UNITED STATES 481 
under the Vienna Code permits the repetition of the same 
specific name. 
Collected in fruit September 8, 1913, moist shady soil, west of 
Sapulpa, Creek County, Oklahoma, my number 5 380. 
The following key to the species of Rhexia is offered: 
Anthers relatively short, oblong, straight, not spurred at base. 
Pet llow. Leaves lanceolate. 1. R. tulea Walt. 
Petals pink-purple. Leaves ovate. 
Hypanthium glabrous. Upper surface of the leaves hirsute, 
. petiolata Walt. 
Hypanthium glandular-hirsute. Upper surface of ee leaves glabrous. 
3. R. serrulata Nutt. 
Anthers longer, linear, curved, spurred at the base. 
Anther-sacs very slightly spurred. Petals less than 10 mm. long, white. 
4. R. parviflora Chapm. 
Anther-sacs evidently spurred. Petals more than 10 mm. long, pale pink (or 
white in R. lanceolata) to pink-purple. 
Leaves membranous, green; lateral nerves not close to the margin; upper 
surface of some or all leaves hirsute. Hypanthium glandular-hirsute 
to glabrous 
Apex of hypanthium not lanose. Calyx-lobes less than one-third 
length of hypanthium 
Stem aeeig if at all ie internodes conspicuously hirsute. 
datb Neck of hypanthium equaling 
or sey aida shorter than the body. 
Petals sa to white, 10-15 mm.long. Buds with sepal 
tips mostly s thine ed. 
Leaves clliptic-ovat o lanceolate, all evidently three- 
meee pert over 2 cm. long, the lower with a 
more iolar 
Leaves pe ae may on evident Aicoes 3-4 mm. 
long. Petals about 10 mm. long 
ee cae Small. 
Leaves lanceolate to elliptic-lanceolate, on_ ill- 
defined eeosiaeeg Petals 12-15 mm 
6. R. mariana L. 
Leaves narrowly-lanceolate to linear, only the main 
stem-leaves if any three-veined, mostly less than 2 
cm. long, sessile. Petals 10-12 mm. long 
oR lucedinta Walt. 
Petals Soni Se aa Buds with sepal-tips mostly 
appressed. 
eet 1825 mm. long. oe onatepma Io-14 mm. long, 
ck equaling the body. Stem obscurely angled. 
aoe ‘Wont si epee lateral nerves ob- 
ensis Grise 
