'>i" 



RUBIACE-E. 33 



of Diodia. the ro?e-<:olored or white corollas elongated in the typical species : sta- 

 mens and style u^ually exserteil. — Liunaea, v. IGJ: DC. Prodr. iv. 506; Hook. 

 i!c Am. But. Beech, t. 00 ; Benth. A: Hook. Cr. u. ii. ]44 (calyx wronLdy said t.j 

 persist ou the fruit); Gray, Proc. Am. Acad. xis. 77. — where the genas Ls 

 extended. 



* Corolla rose-paq)le, with slender almost filiform tube: erect annual. 



C. W rightii, Gray. Sjiar-ily hirsute, abcut a foot high, with long intern' .iles : leaves 

 oblong-lanceolate, nen o=e-veiny, upper attenuate-acute ; upperm j-t foiir or more involncrate 

 around the solitary capitate glnmerule; cah"x-lobes 4, attennate-subnlate and almost e^ual, 

 nearly equalling the corolla-tube, or two of them sometimes very short, liispid-ciliate toward 

 the base : corolla salverform, 2 lines \'-'n-z : >tiLriiias 2. short -linear : ovary and immature fruit 

 didymous. — PI. Wright, ii. f>>. — Plains and mountains of >. Arizona, Wright, Lemmon. 

 Habit of C. rubra, but far smaller-tiowered. 



* * Corolla white or whitish, small (about 2 lines long): stamens and st^ie little exsL-rted: sfj^- 

 ma? ^ho^t; low and diffuse annuals or perennials. 



C. SUbulata, Grat. Glabrous and smooth thrcngliijut : srems ascending from an annual 

 root, a span ur two high, somewhat paniculately branched : branches floweriuL^ from most 

 of the axils : leaves narrowly linear becoming subulate (inch or less Lug ; clusters rather 

 few-flowered ; corolla aim' sr -alverform : cal}-x-lobes 2 or 3 lanceolate and foliaceous, one or 

 two much smaller and partly scarious or reduced to sripule-like teeth; L^Tj-ecium 2-merous: 

 fruit cuueate-obovate, slighrlv didyme-us. ol'scnrely puberulent: carpel- c'jriai;t.-"ns, at ma- 

 turitv separatinr: from a narrow linear and bifid persistent carpophore (not unlike that of 

 some UmbeUiferiJe) and openiuir on the ventral face — Proc. Am. Acad. xix. 7s, not that 

 of HemsL Biol. Centr.-Am., which is a slip of pen or tvpe for C- subalata. Hook, i Arn. 

 ■'•jtermacoce subulata, Pav. ex DC. (Borreria subulata, DC. Prodr. iv. 54-3) : Hemsl. L c. 60.— 

 S. Arizona, Wright (from seeds which were raised in Botanic Garden, Cambridge, in 1S52I, 

 L'iiitmon. (Mex.) 



C. allococca, Grat, 1. c. Hirsute or hispidul'jiLs to almost glalrirs. diffusely branched 

 from a perennial root, low and much spreading or depre-sed, flowering from summit and 

 uppermost axUs : leaves from linear to oblong-lanceolate (half-inch to barely inch long I : 

 corolla fnnnelform, 3— i-loted : calyx-lobes 3 to 5, commonly 4 and equal, lanceolate, longer 

 than the ovary and fruit : gyncecium 3-4-merous : stii'mas short and broad: fruit obovate- 

 globose, sometimes glabra "is and smooth, sometimes partially or wholly In-pioulou-. 3-4- 

 cocl l'Uj. more commonly S-coceeais ; the carpels flattened on the ventral face, separating from 

 a weak scarious carpophore, either clo-eJ or torn open ventraUy. — Diodia tricocca, Torr. &. 

 Grav, Fl. ii. 30. D. tetracocca, Henisl. Biol. Centr.-Am. Bot. ii. .56. t. 4U, f. 10-15. Sperma- 

 coce ? tetracocca. Martens & Gal. Bull. Acad. Brux. xi. 132. fide HemsL — Prairies of Texas, 

 first coU. by Berlandier, Drummond, &c. (Mex.) 



24. SPERMACOCE, Dill. (l-cpiJ.a. seed, oKWKij, point; the carpels 

 pointed or crowned with one or more calyx- teeth.) — Low herbs, with small and 

 white sometimes bluish or purplish flowers, and small fruits in sessile ilomerules 

 at the nodes; chiefly tropical, the greater number American. — Dill. Elth. ii. 

 •370. t. 227 ; L. Gen. ed. 1. 2'i : Benth. & Hook. Gen. ii. 14-5. Sper/i/acoce 

 •k Borreria. Meyer. Prim. Fl. Esseq. 79; Cham. l\: Sohlecht. in Linn. iii. 310. 

 3.5.3; DC. Prodr. iv. 540, oo2. Fl. summer: corolla in otrr species short and 

 white. 



.S. in-toi.ucil4ta, Ptiish, PL i. 105, appears to have been founded on Crusea rubra, Cham. 

 & S.lJe lit. (notwithstanding the 'flowers white"), and without much doubt was wrongly 

 attributed to this country. 



# Leaves from oval to oblors-lanceolate. contracted into a narrow base or short and margined 

 petiole, obliquely more or less pinnate-veined, in ours smooth and glabrous or a little scabrous; 

 fruit splitting into the two carpel*, one broadly open on the ventral face and discharging its 

 seed, the other cln-ed (at least at first) by the membranaceous or coriaceous dissepiment. — 

 Spermacoce, G. F. W. ileyer, 1. c. ; DC. 



