1911] Bush,— The Missouri Rhexias 167 
middle, aristulate-tipped, 3-nerved; calyx-tube distinctly and usually 
rather copiously bristly-hispid Ea Pa me ee A latifolia, n. sp. 
Stem cylindric, slender, low, hirsute-pubescent; leaves short-petioled, oblong 
or linear-oblong, acute at the apex, narrowed at the base, 2-4 em. long, 
4-10 mm. broad, 3-nerved; calyx-tube essentially smooth or with a few 
scattered bristles ce AAA mañana. 
Stem square, stout, tall, slightly pubescent or nearly glabrous; leaves nearly 
sessile, ovate or ovate-oval, acutish, 2-5 em. long, 2-4 em. broad, 3-5- 
nerved, veiny Pa O. 
l. Rhexia latifolia n. sp., erecta simplex vel leviter ramosa 4-6 
dm. alta; caule alato-quadrangulari cum pilis rectis patentibus 
1-3 mm. longis tecto, faciebus leviter concavis; foliis sessilibus vel 
subsessilibus anguste vel late ellipticis 2-6 em. longis 10-25 mm. latis 
apice basique acutis in media parte latissimis, apice aristatis, supra 
lutei-viridibus cum pilis rectis sparsis 1-1.5 mm. longis et inter se 
1-2 mm. distantibus praecipue inter nervias obsitis, subtus palli- 
dioribus valide 3-nerviis cum pilis praecipue innerviis munitis, margine 
obscure serrulatis, dentibus minimis; inflorescentia puberula foliosa 
saepe ramosissima, ramulis gracilibus adscendentibus vel erectis; 
floribus terminalibus vel in axillis superioribus purpureo-roseis 20-25 
mm. diametro breviter (1-2 mm. longe) bracteatis, bracteis lineari- 
lanceolatis; tubo capsulae globoso ca. 4 mm. longo pilis longiusculis 
hispido supra in collum subaequilongum vix constricto; dentibus 
calycis lanceolatis saepissime a fructu deciduis; seminibus stramineis 
rugosissimis.— Plants 4-6 dm. tall, erect, simple or somewhat 
branched. Stems quadrangular, wing-angled, with slightly concave 
sides pubescent with straight spreading hairs 1-3 mm. long. Leaves 
sessile or nearly so, narrowly to broadly elliptical, 2-6 em. long, 
10-25 mm. broad, pointed at each end, broadest at about the middle, 
aristulate-tipped, upper surface yellowish-green, with straight scat- 
tered hairs 1-1.5 mm. long, and 1-2 mm. apart, mostly between the 
nerves, the lower surface paler, the hairs mostly along the nerves, 
strongly 3-nerved, faintly serrulate with long, shallow, ciliate teeth. 
Inflorescence puberulent, leafy, often much-branched, with slender 
ascending or erect branchlets. Flowers terminal and in the upper 
axils, deep purplish-pink, 20-25 mm. broad, on short (1-2 mm. long) 
pedicels, subtended by linear-lanceolate bracts. Body of capsule 
globose, about 4 mm. high, with constricted neck of about equal 
length. Calyx-teeth lanceolate. mostly deciduous from the fruit. 
Seeds straw-colored, very rugose. High prairies and barrens, Southern 
Missouri, Arkansas and Oklahoma. Summer and Autumn. 
Specimens examined: Missouri: Alba, Bush 6070, July 24, 1910, 
type; Palmer, July 24, 1910, co-type; Palmer 2432, July 7, 1909; 
Waco, Palmer, 923, September 21, 1906; 949, September 21, 1906; 
1100, August 11, 1907; 1256, October 4, 1908. Arkansas: Hot 
Springs, Trelease, September 3, 1897. Oklahoma: Sapulpa, Paul J. 
White 101, August 11, 1900. 
