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MEMOIRS OF THE NEW YORK BOTANICAL GARDEN [Vol. 9, No. 3 



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6. Phyllaries sharply acute, involucre obconic, 25- 35-f lowered; corollas 

 26-30" mm long; leaf-blades oblanceolate to obovate, 7-11 cm long, 

 3.5-5.0 cm broad; petioles 6-12 mm long. 4. Stenopadus obconicus. 



3. Corolla campanulate, 16-18 mm long, the lobes flexuous, not coiled; fila- 

 ments attached below the middle; involucre broadly campanulate, 25-35- 

 flowered; leaves broadly oblanceolate or subcuneate; sect. Campestris. 



5. Stenopadus campestris. 

 2. Filaments attached to the sinus; corolla-tube infundibuliform-ventricose; 

 achenes with 5 principal nerves; annulus evident; setae 3-4-seriate, capil- 

 lary, flattened at the base but not connate; sect. Connellia. 

 7. Leaves wholly glabrous or glabre scent; achenes 9-10 mm long. 



8. Involucres 5-6 cm long; phyllaries ca. 15-ranked, the middle carinate, 

 shining and strongly keeled, only the lowermost pubescent; corolla- 

 tube 12-20 mm long, glabrous at the sinus within. 6. Stenopadus connellii. 



8. Involucres 3.5—4.0 cm long; phyllaries 6-8-ranked, not strongly carinate, 



all externally strigillose; corolla-tube ca. 25 mm long. 



7. Stenopadus chimantensis. 

 7. Leaves permanently sericeous beneath; achenes (3) 4-6 mm long. 



9. Leaves 6-12 cm long, 4-8 cm broad, oblong-obovate, retuse and rounded 



at the apex; corolla-tube 8-9 nrn long, very scantily pilose within at 

 the sinus; achenes 3-4 mm long. 8. Stenopadus sericeus. 



9. Leaves rhomboid-oblanceolate, 10-15 cm long, 5-6 cm broad, obtusish 

 or acutish at the apex, narrowly acute to acuminate at the base; corolla 

 tube 12-13 mm long, obviously pilose within at the sinus; achene ca. 

 5 mm long. 9. Stenopadus ventricosus. 



1. Leaves (4) 6-18 (30) cm long, chartaceous or coriaceous, the lateral veins 

 prominent, and the blade strongly reticulately-veined; phyllaries externally 

 strongly pubescent; sect. Stenopadus (Talaumifolius). 

 10. Branchlets strongly sericeous. 

 11. Phyllaries acute, not cucullate. 



12. Heads 1-3, sessile or on very short peduncles, ca. 15-f lowered; outer 

 phyllaries ca. 2.5 mm wide, the inner ca. 1.5 mm wide; leaves obovate, 

 4-10 cm long; achene ca. 9 mm long, 4 (5)-angled, 12-nerved; corona 

 ca. 1 mm high, prismatic, glabrous. 10. Stenopadus talaumifolius. 



12. Heads apparently solitary, ca. 30-flowered; outer phyllaries 3.5—9.0 mm 

 wide, the inner 2-3 mm wide; achene ca. 12 mm long, prismatic, 10 

 (12?)-nerved; corona ca. 0.7 mm high, prismatic, the sides strigose. 



11. Stenopadus eurylepis. 

 11. Phyllaries obtuse, strongly cucullate; leaves 12-24 cm long, 6-11 cm 



broad. 12. Stenopadus cucullatus. 



10. Branchlets glabrous or essentially so, or at least glabrate. 

 13. Leaf-blades 10-17 cm long. 



14. Leaf-blades oblanceolate, attenuate at the base, dull on the upper 

 surface; peduncles sparsely strigose (5) 10-30 cm long, heads 2-4, 

 20-30-flowered. 13. Stenopadus cardonae. 



14. Leaf-blades elliptic-ovate to obovate, the apex acute or obtusish, 

 merely acute at the base, lucidous on the upper surface; peduncle 

 3—5 cm long; heads solitary, 19-21-flowered. 14. Stenopadus affinis. 



13. Leaf-blades 20-30 cm long, chartaceous; branchlets densely rufous; heads 

 solitary sessile; phyllaries glabrous or essentially so, indurate, ciliolate, 

 the lower member broadly ovate, obtuse; achene 3-5-angled, with 5 

 principal nerves; corona prismatic, ca. 0.8 mm long, sparsely hispid- 

 subpilose at the periphery. 15. Stenopadus colombianus. 



Section 1, Kunhardtia Maguire & Wurdack, sect. nov. 



Capitula solitaria terminalia majuscula multiflora [(25) 50-100]; corollis in 

 tubo, limbo,, lobisque differentiatis; filamentis connectis tubo et limbo affixis; 

 receptaculo valde paleaceo; achaeniis prismaticis; annulo deficienti; corona 

 aliquantum 5-lobata; pappo 5-8-seriato, setis anguste subpaleaceis, ad basim 

 connatis; foliis non reticulatis. 



TYPUS: Stenopadus kunhardtii Maguire. 



