5 2 



COMPOSITAE. 



VOL. III. 



i. Galinsoga parviflora Cav. Galinsoga. Fig. 4522. 



Galinsoga parviflora Cav. Icon. 3: 41. pi. 281. 1794. 

 Galinsoga parviflora hispida DC. Prodr. 5: 677. 1836. 



Slightly appressed-pubescent or hirsute, i-3 high. 

 Leaves thin, ovate or deltoid-ovate, 3-nerved, i'-3' long, 

 acute at the apex, mostly obtuse at the base, dentate, 

 the lower slender-petioled, the upper short-petioled or 

 sessile, and sometimes nearly or quite entire; heads 

 usually numerous, 2"-3" broad, slender-peduncled; 

 bracts of the involucre glabrous or nearly so, the outer 

 shorter; pappus of the disk-flowers 4-16, oblong to 

 spatulate, fimbriate obtusish or bristle-tipped scales, 

 somewhat shorter than or equalling the finely pubescent 

 obpyramidal achene. 



In door-yards and waste places, Maine to Ontario, Oregon, 

 North Carolina, Missouri, Arizona, California and Mexico. 

 Bermuda ; Jamaica. Naturalized from tropical America. 

 Introduced into Europe as a weed. June-Nov. 



Galinsoga caracasana (DC.) Sch. Bip., similar to this 

 species but with reddish rays, and the pappus of the disk- 

 flowers only half as long as the achene, also tropical Amer- 

 ica, has been found in waste grounds in New Jersey and 

 Maryland. 



75. ENDORIMA Raf. Am. Month. Mag. 4 : 195. 1819. 

 [BALDUINA Nutt. Gen. 2: 175. 1818. Not Baldwinia Raf. F. 1818.] 



Perennial, caulescent, simple or branched, erect herbs, with alternate entire narrow punctate 

 leaves, and large terminal heads of both tubular and radiate, yellow flowers, or those of the 

 disk purple. Involucre hemispheric, its small bracts imbricated in several series, appressed, 

 or with spreading tips, the outer shorter. Receptacle convex, deeply honey-combed, chaffy, 

 the persistent chaff coriaceous or cartilaginous, laterally united, subtending the disk-flowers. 

 Rays large, neutral, toothed. Disk-flowers perfect, fertile, the corolla 5-toothed. Anthers 

 sagittate at the base. Style-branches with truncate subulate tips. Achenes turbinate, silky- 

 villous. Pappus of 7-12 scario.us nearly equal scales. [Greek, perhaps referring to the 

 immersion of the achenes in the honeycombed receptacle.] 



Two known species, natives of the southwestern United States. Type species : Balduina uni- 

 flora Nutt. 



i. Endorima uniflora (Nutt.) Barnhart. One- 

 headed Actinospermum. Fig. 4523. 



Balduina uniflora Nutt. Gen. 2: 175. 1818. 



Actinospermum uniflorum Barnhart, Bull. Torr. Club 24: 411. 



1897. 

 E. uniflora Barnhart; Small, Fl. SE. U. S. 1283. 1903. 



Stem stout, puberulent, simple, or with a few erect 

 branches, i-3 high. Leaves thick, spatulate-linear or the 

 upper linear, sessile, erect or ascending, i'-2' long, the 

 lower 2"-3" wide; heads long-peduncled, solitary, 2'-2i' 

 broad ; bracts of the involucre ovate, acuminate, thick, their 

 tips at length spreading ; rays 20-30, cuneate, 3-4-toothed 

 at the truncate apex ; disk 8"-i2" broad ; chaff of the re- 

 ceptacle cuneate, truncate, very cartilaginous, more or less 

 united laterally, the summit eroded ; achenes obconic ; pap- 

 pus of 7-9 oblong scales about as long as the achene. 



In wet pine-barrens, Virginia (according to Torrey and Gray) ; 

 North Carolina to Florida and Louisiana. July-Sept. 



76. MARSHALLIA Schreb.; Gmelin, Syst. 1208. 1791. 



Perennial, often tufted, simple or branched herbs, with basal or alternate, entire leaves, 

 and large long-peduncled discoid heads of purple, pink or white, glandular-pubescent flowers. 

 Involucre hemispheric or broadly campanulate, its bracts in I or 2 series, herbaceous, narrow, 

 nearly equal. Receptacle convex or at length conic, chaffy, the scales narrow, rigid, distinct. 

 Rays none. Flowers all perfect and fertile, their corollas with a deeply 5-lobed or S-parted 

 campanulate limb and a slender tube. Anthers minutely sagittate at the base. Style-branches 

 long, truncate. Achenes turbinate, 5-ribbed and 5-angled. Pappus of 5 or 6 acute or acumi- 

 nate, ovate or lanceolate-deltoid, nearly entire scales. [Named for Humphrey Marshall, of 

 Pennsylvania, botanical author.] 



About 6 species, natives of the central United States. Type species : Marshallia Schreberi Gmel. 



