Galinsoga. COMPOSITE. 303 



involucre fewer and narrow: rays 8 or 10, cuneate, half-inch long, 3-4-lobed at summit: 

 alveoli cuspidate-toothed at the angles : akenes stipitate, turbinate, the flat summit crowned 

 with the pappus of about 12 radiate and orbicular-obovate palerc. — Jc(,nospermum, Ell. 1. c. 

 A. anrjustifonum, Torr. & Gray, 1. c. Buphthalmum angu^ti folium, Pursh, Fl. ii. 564. — Sand- 

 hills, Georgia and Florida; first coll. by Biulram. 



119. MARSHALLIA, Schreb. {Humplmj Marshftll author of the earlie.?t 



indigenous work on the sylva of N. America.) — Low and smooth nearly glabrous 



perennials (of S. Atlantic States) ; with fibrous roots, commonly simple kerns, and 



solitary pedunculate (Armeria-Vike) heads of rose-purple or white gl:indidar- 



puberulent flowers, with blue anthers, produced in spring or summer : peduncle 



puberulent: leaves alternate, entire, mostly .3-nerved, but not manifestly' veiny. 



— Gen. ii. 810; Torr. & Gray, Fl. ii. S'.IO. Persoonia, Michx. Fl. ii. 104, not 



Smith. Trattenickifi. Pers. Syn. 403, not Willd. Therolepta, Raf. 



# Leaves thickish, mostly obtuse, all but the upper tapering below into a slender sessile base or 

 margined petiole ; radical spatulate. 



' M. angustifolia, Puksh. Sometimes 2 feet 'high and branching above, cauline leaves 

 linear, or the uppermost linear-subulate ; radical spatulate : bracts of involucre narrow, 

 mostly acute, rigid, head only half-inch high : corollas pale purple.: akenes minutely pubes- 

 cent or at maturity glalirous, longer than the pappus. — Fl. ii. 520; Ell. bk. ii. 316 (& var. 

 cyananthera) ; Torr. & Gray, 1. c. Athanasia graminifolia,'\X&\t.Ca.T.20\. Persoonia angus- 

 tifolia, Jlichx. I.e. Trattenickia angustifolia, Pers. I.e. — Low pine barrens, X. Carolina 

 (and Teuuessee ?) to I-'lorida and Louisiana. 

 M. CSBSpitosa, Xutt. Jlore tufted, a foot high or le.=s, either leafy only at ha>e and with 

 scapiforni peduncle, or sparsely leafy-stemmed and sparingly branching : leaves spatulate- 

 linear, or somewhat lanceolate and the upper liuear : bracts of involucre narrow-linear, acute 

 or acuti.^h : head two-thirds inch or more high : corollas pale ro.ae-color or white : akenes 

 obpyramidal, villous on the angles, shorter than the pappus. — Xutt. in DC. Prodr. v. 680 ; 

 Hook. Bot Mag. t. 3704; Torr. & Gray, 1. c. — Calcareous soil, Arkansas to Te.\as ; first 

 coU. by Derlandier and XidtaU. 

 ^*** M. lanceolata, Pursh. A foot or less high, commonly leafy only at base and with scapi- 

 form simple peduncle : leaves lanceolate, oblauceolate, or spatulate, 3 to 6 lines wide; bracts 

 of involucre oblong-linear or lanceolate, obtuse : akenes elougated-turbinate, pubescent, 

 much longer than the pappus. — Fl. ii 519 ; Ell. 1. v;. ; Torr. & Gray, 1. c. Ptrsoonia lan- 

 ceolata, ilichx. 1. c. Trattenickia lanceolata, Pers. 1. c. — Open dry woods, N. Carolina to 

 Florida, preferring the upper districts. 

 -«— Var. platyph^lla, M. A. Curtis. Leafy-stemmed, sometimes 2 feet high, with 

 spatulate-obloug leaves 2 to 6 inches long, all obtuse. — Chapm. Fl. 241. — Moist or wet 

 ground, X. Carolina, &c., from the middle country westward. 



* * Leaves thinner, conspicuously 3-nerved; cauline acuminate. 



M. latifolia, Pursh, 1. c. A foot or so high, leafy to the middle or more : cauline leaves 

 oblong- or ovate-lanceolate, sessile liy a merely narrowed base, gradually acuminate, 2 or 3 

 inches long: bracts of the involucre linear, acute or acutish, rigid. — Torr. & Gray, 1. c. 

 Athannsia trinervia, ^A^alt. 1. c. Persoonia latifolia, ilichx. 1. c, t. 43. Tratlritirkia latifolia, 

 Pers. 1. c. iLirslinUin Srhreheri, Tratt. Arch. Gen. i. 108. — Moist soil, Virginia to Missis- 

 sippi, along the middle country. 



120. GALINSOG-A, Euiz & Pav. {II. Galinsoga, a Spanish physician 

 and botanist.) — Annuals of Tropical America, the common species now widely 

 disseminated. 



**™*' G. parviflora, Cav. a foot or two high, loosely branching, slender, somewhat pubescent : 

 leaves tliin, ovate, acute, serrate, 3-nerved from near the base, petioled : heads 2 lines long, 

 slender-peduncled from the summit of the branches, somewhat paniculate: rays whitish, 

 barely exserted : disk-flowers yellow : pappus usually of 8 to 16 short palete. — Ic. iii. 41 , t. 281 ; 

 DC. Prodr. v. 677 ; Gray, Man. 264 ; Reichenb Ic. Fl. Germ. t. 983. — Open or waste grounds. 



