104 BOTANY. 



Luis Valley, Colorado (421), Southern Arizona (772, 462), and Agua 

 Azul, New Mexico (124). A polymorphic plant. 



Verbesina podocephala, Gray (PL Wright. 2, p. 92).— Erect, 2-3° 

 high, hispid, branching from a woody base ; leaves serrate, sub-sessile or 

 even, rarely slightly decurrent, lanceolate to orbicular, 3-5-nerved, with 

 (beneath) veinlets conspicuously netted, beneath glandular hispid, and veins 

 and veinlets with stiff, long, white hairs ; peduncle 4-8' long, monocepha- 

 lous ; scales of involucre in two series, the five outer ovate, roundish, the ten 

 inner longer, chartaceous, and acute; achenia of ray sharply 3-angled 

 or winged, slightly toothed on the angles, the inner flattish, with two (or by 

 abortion' one) stiff awns from the angles; flower 1' in diameter; rays 

 bright sulphur-yellow, oblong, entire or slightly toothed at the apex. — 

 Chiricahua, Ariz. (517). 



Coreopsis tinctoria, Nutt. — Ash Creek, Arizona, at 5,000 feet alti- 

 tude (317). 



Coreopsis cardaminefolia, T. & G. — Erect, smooth, slender, almost 

 unbranched; leaves pinnately parted; exterior involucre small; "achenia 

 winged, broadly oval, sometimes with 2 short, subulate teeth"; rays 

 3-toothed at the summit, twice as long as the interior involucre. — Zuni 

 Village, Ariz., at 6,700 feet altitude (157). 



Thelesperma* longipes, Gray (PL Wright. 1, 109). — "Suffrutescent"; 

 glabrous, much branched ; branches short and leafy ; leaves 3-5-parted ; 

 segments linear-filiform; peduncles 1° long, almost filiform, terminated by 

 a single rayless head ; inner series of involucral scales with broad scarious 

 margins ; outer series small and obtuse ; achenium without pappus (merely 

 a very small crown-like border), slender, terete or nearly so, and tubercu- 

 late-rugose on the back ; chaff not adhering to the cast-off achenia. — Camp 

 Bowie, Ariz. (451). 



* Thelesperma, Less. — Heads heterogamous, radiate; flowers of the ray neutral, in a single series ; 

 disk-flowers fertile ; heads often homogamous from the rays beiDg absent. Involucre double, broadly 

 eainpanulate ; the inner series of subeqnal membranaceous scales, -which are united more than half-way 

 to the summit ; the exterior series of a few small bracts. Receptacle flat with many flat scarious palets 

 which subtend the flowers of the disk. Ray-flowers, when present, ligulate, spreading; disk-flowers 

 regular, limb broadly cylindrical or narrowly campanulate, 4-5-clef t. Anthers obtuse at base and entire ; 

 styles of the disk-flowers papillose-puberulent at the apex, terminated by an acute appendage. Achenia 

 linear or linear-oblong, somewhat obcompressed truncate at the apex and erostrate, with two retrorsely 

 pectinate-ciliate awns or naked. Rays, when present, yellow ; disk sometimes purplish. Achenia 

 smooth or tuberculate. — Benth. &. Hook. 



