256 COMPOSITE. Tetragonotheca. 



or sometimes wanting : stems more branching : involucre ovoid and less angled 

 in the bud. ffalea, Torr. & Gray, 1. c. 



T. Texana, GRAY & ENGELM. Minutely pubescent or glabrate: stems slender, a foot or 

 two high, sometimes freely branched : cauline leaves laciniately pinuatifiil or incised, 2 or 3 

 inches long; the lower tapering into margined connate petioles; upper with winged petioles 

 or bases dilated at insertion and usually connate around the stem into a toothed disk: pe- 

 duncles elongated (4 to 9 inches long) : lobes of the involucre and 7 to 9 rays half-inch long: 

 tube of the corollas glandular : pappus none, or very minute, or sometimes of numerous 

 subulate squamellffi of length nearly equalling the breadth of the akeue. Proc. Am. Acad. 

 i. 48. Halea Texana, Gray, PI. Feudl. 83, & PI. Lindh. ii. 227. Tetragonosperma I yr at! fo- 

 lium, Scheele in Linn. xxii. 167. Rocky ground, Texas, Lindheimer, Wright, &c. (Adj. 

 Mex., Berlandier, Palmer.) 



T. Ludoviciana, GRAY. Glabrous or nearly so : stem rather stout, 2 to 4 feet high, usu- 

 ally leafy to the top : leaves ovate or oblong, ample (the larger 4 to 7 inches long), saliently 

 and acutely dentate, the lowest on winged petioles, upper all connate by mostly broad bases 

 into a large perfoliate disk : peduncles mostly longer than the leaves : corollas with tube 

 somewhat pubescent: ligules 10 to 12, oval, less than half-inch long: akenes (over 2 lines 

 long) crowned with a conspicuous pappus of rigid oval or oblong chaffy scales in length 

 equalling the breadth of the truncate summit. E. Hall, List PI. Tex. 13, no. 328. Halea 

 Lutloi-iciaita, Torr. & Gray, 1. c. Sandy soil, Louisiana (Hale, Leavenworlh) & Texas. 



Var. repancla, Depauperate or dwarf form ; flowering sometimes from near the 

 ground ; the leaves therefore petioled, and the upper with perfoliate disk of united bases of 

 the petioles, nearly as in T. Texana: peduncles elongated as in that species; so that it is as 

 it were intermediate between the two. flalea repanda, Buckley in Proc. Acad. Philad. 

 1861, 458. Texas, near Corpus Christi, Buckley. W. of San Antonio, Palmer; ail au- 

 tumnal state, flowering as seedlings. 



88. SCLEROCARPUS, Jacq. (SKAiypo's, hard, *ca/m>s, fruit, referring 

 to the indurating enclosing bracts.) Strigose-pubescent herbs (the original spe- 

 cies African, the others mostly Mexican) ; with branching stems, terminal pedun- 

 culate heads of yellow flowers, and alternate or opposite leaves : fl. summer. Act. 

 Helv. ix. 34, t. 2, & Ic. Rar. t. 176; Benth. & Hook. Gen. ii. 364. Aldama, 

 LI. iv. & Lex. Nov. Gen. Descr. i. 14. Gymnopsis, DC. Prodr. v. 561, in part. 



S. uniserialis, BEXTH. & HOOK. 1. c. Annual, a foot or two high, loosely branched: 

 leaves all alternate, slender-petioled, deltoid- or rhombic-ovate, or uppermost lanceolate, 

 coarsely dentate, the strigose pubescence of the lower face canescent : loose iuvolucral bracts 

 nearly in a single series ; corollas orange ; ligules 5 to 9, oval or oblong : fructiferous bracts 

 cartilaginous or bony, terete, roughish, in age often tuberculate. G//miu>jisis uniserialis, 

 Hook. Ic. t. 145; Torr. & Gray, Fl. ii. 316; Pievue Hort. 1853, t. 14; Belg. Horticole, 1854, 

 t. 20. Aldama uniserialis, Gray, PI. Liudh. ii. 228. Moist or shady ground, Texas, Ber- 

 landier, Drummond, &c. (Mex.) 



89. ECLlPTA, L. (Name from cVAeiVo), to be deficient, i. e. in pappus.) 

 - Insignificant herbs, of the warmer regions, chiefly of shores ; with opposite 

 leaves, and scattered small heads of whitish or yellowish flowers; in summer. 

 Mant. Alt. 157; DC. Prodr. v. 489. 



E. alba, HASSKARL. Annual, 1 to 3 feet high, or often procumbent and smaller, minutely 

 strigose-pubescent : leaves lanceolate or oblong, sparingly serrate, sessile or the lower some- 

 what petioled : peduncles from the upper axils, sometimes equalling the leaves, sometimes 

 shorter than the heads : ligules not surpassing the disk, white : akenes of the disk at length 

 corky-margined, truncate at summit or 4-denticulate when young. PI. Jav. Rar. 528. E. 

 erecta & E. prostrata, L. Mant. Alt. 286. E. procumbens & E. brachypoda, Michx. Fl. ii. 

 129. E. species 1-8, DC. 1. c. Cotula alba, L. Syst., & Verbcsina ofta/L. Spec. Eupatorio- 

 phalac.ron, Dill. Elth. 1. 113. Amellus Carol nn,i nun, Walt. Car. 313. Shores and river-banks, 

 New Jersey to Texas. (All subtropical countries.) 



