256 COMPOSITiE. Tetragmwtheca. 



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

 iu the bud. — Halea, Torr. & Gray, 1, c. 



T. Texana, Gray & Engelm. Minutely pubescent or glabrate : stems slender, a foot or 

 two high, sometimes freely branched : cauliue leaves laciuiately pinnatiiid 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 squamelloe of lengtli nearly ei^ualling the breadth of the akene. — Proc. Am. Acad, 

 i. 48. Ilalea Texana, Gray, PI. Fendl. 8-3, & PI. Lindh. ii. 227. Tetracjonosperma li/ruti/o- 

 lium, Scheele in Linn. xxii. 167. — Rocky ground, Texas, Lindheimer, \Vri(jht, &c. (Adj. 

 Mex., Berlandier, Palmer.) 



T. Ludoviciana, Gray. Glabrous or nearly so : stem rather stout, 2 to 4 feet hi^h, 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, u])per 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 iialf-iuch 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 

 Ludoviciana, Torr. & Gray, 1. c. — Sandy soil, Louisiana {Hide, Leavemcorlh) & Texas. 



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

 ground ; the leaves tlierefore petioled, and the upi:)er 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. — Halea repanda, Buckley in Proc. Acad. Philad. 

 1861, 458. — Texas, near Corpus Christi, Bacldci/. W. of Sau Antonio, Palmer; an au- 

 tumnal state, flowering as seedlings. 



88. SCLEROCARPUS, Jacq. (SkAt^po?, hard, KapTro'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, 

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



S. uniserialis, Benth. & 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 puhescence of the lower face canescent : loose involucral bracts 

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

 cartilaginous or bony, terete, roughish, iu age often tuberculate. — Gijmnopsis uniserialis, 

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

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

 landier, Drummond, &c. (Mex.) 



89. ECLitPTA, L. (Name from ckAcitto), to be deficient, i. e. in pappus.) 

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

 leaves, and scattered small heads of Avhitish or j-ellovvish flowers ; iu 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. Maut. Alt. 286. E. procumhens & E. brachi/poda, Michx. El. ii. 

 129. E. species 1-8, DC. 1. c. Cotula alba, L. Syst., & Verhesina alba, L. Spec. Eupaforio- 

 phalacron, Dill. Elth. 1. 1 13. Amellus Carolinianus, Walt. Car. 313. — Shores and river-banks, 

 Kew Jersey to Texas: (All subtropical countries.) 



