Galinsoga. COMPOSIT^E. 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 

 witii the pappus of about 12 radiate and orbicular-obovate palea;. — Actinospcrmum, Ell. 1. c. 

 A. (uiqusti/'olium, Torr. & Gray, 1. e. Bujihthalmum angusti folium, Pursh, Fl. ii. 564. — Sand- 

 liills, Georgia and Florida; first coll. by Burlrum. 



119. M ARSH ALLI A, Schreb. {Humphru 3IarshaU, author of the earliest 



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



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



solitary pedunculate {Armeria-\\\i.Q) heads of rose-purple or white glandular- 



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. 390. Persoonia, Michx. Fl. ii. 104, not 



Smith. Trattemckia, Pers. Syn. 40o, not Willd. Therolepta, Raf. 



* Leaves tliickish, mostly obtuse, all but tlie upper tapering below into a slender sessile base or 

 margined petiole ; nidical spatulate. 



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

 linear, or t[ie 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 glabrous, longer than the pappus. — Fl. ii. 520; Ell. Sk. ii. 316 (& var. 

 cyananthcra) ; Torr. & Gray, 1. C. Athaitasia gramiuifolia, Walt. Car. 201. Persoonia angus- 

 tifolia, Michx. I.e. Trattenickia angustifolia, Pers. I.e. — Low pine barrens, N. Carolina 

 (and Tennessee ?) to Florida and Louisiana. 



M. CSBSpitosa, Nutt. More tufted, a foot high or less, either leafy only at base and with 

 scapiform peduncle, or sparsely leafy-stenuned and sparingly branching : leaves spatulate- 

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

 or acutish : head two-thirds inch or more high : corollas pale rose-color or white : akenes 

 obpyramidal, villous ou 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 Texas; first 

 coll. by Derlandier and Nuttall. 



M. lanceolata, Pursu. A foot or less high, commonly leafy only at base and with scaj)i- 

 form simple peduncle : leaves lanceolate, oblanceolate, or spatulate, 3 to 6 lines wide : bract.s 

 of involucre oblong-linear or lanceolate, obtuse : akenes elongated-turbiuate, pubescent, 

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

 ceolata, Michx. 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-oblong leaves 2 to 6 inches long, all obtuse. — Chapm. Fl. 241. — Moist or wet 

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



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



M. Ia,tif61ia, Pursii, 1. c. A foot or so high, leafy to the middle or more: cauline leaves 

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

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

 Atkanasia trinervia, Walt. 1. c. Persoonia latifolia, Michx. 1. c, t. 43. Trattenickia latifotia, 

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

 sippi, along the middle country. 



120. GALINSOGA, Ruiz & Pav. {M. Galinsoga, a Spanish physician 

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

 disseminated. 



G. parviflora, Cay. a foot or two high, loosely branching, slender, somewhat pubescent: 

 leaves thin, ovate, acute, serrate, 3-nerved from near tlie base, pelioled : heads 2 lines long, 

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

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

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



