Coreopsis. COMPOSITE. 343 



branched above, angled and striate ; leaves approximate, rigid, sessile, deeply 

 3-cleft ; the lobes rather obtuse, with scabrous margins, linear, entire, or the 

 middle one often 3-lobed ; rays obovate-oblong, sometimes toothed at the 

 apex; corolla of the disk yellow; achenia linear-oblong or elliptical, slightly 

 incurved when mature, narrowly winged, truncate, and crowned with 2 

 short (often deciduous or obscure) teeth. — Null.! gen. 2. p. 573 ; Torr. ! in 

 ann. lye. New York, 2. p. 215; DC. I. c. C. pauciflora, LeJun..' ind. sem. 

 hort. Hamh. 1833; DC. I. c. C. praecox, Fresenius! ind. sem. hort. Franc. 

 1838. Calliopsis palmata, Spreng. syst, 3. pi- 611. 



Plains and prairies, Michigan ! and on the Mississippi above the Falls of 

 St. Anthony, {Dr. Houghton!) to Illinois! Missouri! Arkansas! and Lou- 

 isiana! June-July. — 2i Stem 1-2 feet high, rather rigid. Leaves about 

 2 indies long, with a cuneiform circumscription, 3-lobed below the middle or 

 nearly 3-parted, narrowed and 3-nerved at the base ; the lobes more or less 

 divaricate ; the lateral ones frequently cleft in the lower leaves. Heads 

 solitary, or sometimes several, on short peduncles, fully as large as in C. 

 delphinifolia ; the rays bright yellow, sometimes entire and a little acute, 

 often toothed, especially in cultivation. Chaff filiform, slightly dilated at 

 the summit, shorter than the flowers. 



« « « * « Achenia nearly orbicular, broadly winged and incurved luhen mature, often 

 minutely tuberculate, usually furnished icithalarge callus or tubercle on the inner side 

 at the base and summit, croitmed with 2 short squameUate denticulate {often obsolete) 

 teeth : chaff deciduous loith the fruit : exterior involucre about the length of the inte- 

 rior : rays (large) obovate or cuneiform, coarsely 3-b-toothed or incised at the summit : 

 leaves opposite, or the uppermost rarely alternate, entire or divided often in the same 

 individual, not serrate, the lower ones petioled : heads on long naked peduncles. — 

 Leachia, Cass. (CoreopsoideS; Mxnch. Chrysomelea, Tausch, Nutt.) 



13. C. auriculata (Linn.) : pubescent with spreading or retrorse hairs, or 

 at length somewhat glabrous; radical and lower leaves on slender hairy pe- 

 tioles, some of them oval or roundish and entire, others 3-parted or divided, 

 with the lateral divisions much smaller; the uppermost on short petioles or 

 nearly sessile, oblong or oval-lanceolate; heads mostly solitary, on elongated 

 glabrous peduncles ; scales of the exterior involucre oblong-linear or lanceo- 

 late, at length spreading; achenia nearly orbicular, broadly winged, strongly 

 incurved when ripe, often minutely muricate-tuberculale on one or both sides, 

 crowned with 2 very short ciliate-denticulate somewhat squameUate teeth, 

 which are sometimes deciduous or obsolete. 



a. Ctespitose and somewhat stoloniferous ; stems short and slender, simple 

 or sparingly branched near the base ; leaves at first hairy, at length nearly 

 glabrous, entire and roundish-oval, or 3-parted, with the lateral divisions very 

 small, or sometimes either pinnately or pedately 5-divided on the saine indi- 

 vidual ; the upper leaves rather acute; rays oblong-cuneiform, coarsely and 

 unequally 4-5-toothed ; wing of the achenium entire or very minutely denti- 

 culate. — C. auriculata, Linn. ! spec. 2. p. 908 (ex svn. Gronov., Moris., Sf 

 Pluk. !) ; Ait.! Kew. {ed. 1) 3. p. 252 ; Michx.! fl.2. p. 138; Fursh, I. c. 

 C. auriculata var. diversifolia, Ell. ! sk. 2. p. 437. C. diversifolia, DC. ! 

 frodr. 5. 'p- ^71 ; not ol' Jacq., nor o? Hook. Chrysanthennim hirsutum Vir- 

 ginianum &c., Pluk. ! aim. t. 83, /. 5, S^' especially, t. 242, /'. 4. C. Virgini- 

 anum trifolaium &c., Moris, hist. 3. sect. 6. t. 3, /. 45. (good figure.) 



/3. leaves oval-oblong or ovate-oblong, all but the uppermost on slender 

 hairy petioles, mostly obtuse, all entire ; rays oval-oblong, rather acute, 

 slightly 2-toothed. 



y. stem elongated, and with the leaves mostly softly pubescent, more or 

 less branched ; lower leaves 3-divided or parted, the terminal division 3 or 4 



