596 House: North American Convolvulaceae 



Type species : Quamoclit pinnata (Desr.) Boj. {Jpomoea Qua- 

 moclit L., Quamoclit vulgaris Choisy). 



Key to the ^ortli American species 



Sepals without awns; leaves 'pinnately divided; pedicels thick- 



• ened; corolla-lube clavate. (Section £i/^«rt;//£7r/zV Peter.) I. Q. pinnata. 

 Sepals awned ; leaves entire or lobed. Corolla-limb shorter than 



the tube. (Section Calboa Peter.) 

 Corolla-limb expanding abruptly from a slender tube, the limb 



campanulate or cup-shaped. 

 Limb of the corolla deeply campanulate, deeply lobed. 

 Lobes of the corolla-limb rounded. 



Corolla red or scarlet, the tube about 3-4 cm. 



long ...,;. 2. Q, Lirtdhyi, 



Corolla yellow, the tube about 2 cm. long 3. Q, LnnglasseL 



Lobes of the corolla-limb oblong-lanceolate, acute ; 

 tube about 1.5 cm. long; corolla yellowish, tinged 



I 



with purple 4. Q* glohosa. 



Corolla-limb shallowly cup-shaped, about 1. 5 cm. broad, 



angulately lobed, the tube 3-5 cm. long 5- Q- coccinea. 



Corolla-limb expanding funnelform or tubular from a slender 



and often bent tube. 



Corolla-limb 5 -angled, about 1.5 cm. broad, the tube 



fully 5 cm. long 6. Q. gya7idijlora. 



Corolla-limb deeply 5 -lobed, lobes acute ; the tube about 



3 cm. long 7. Q. vitifolia. 



Corolla-limb cylindrical and bent, longer than the tube, yellow, 



tinged with red. (Section Mina House.) 8. Q. lobata. 



I, Quamoclit pinnata (Desr.) Boj. Hort. Maurit 224. 1837 



Ipouioca Quamoclit 1^. Sp. PI. 159. 1753. 



Co7ivohndus pennatus Desr. in Lam. En eye. 3 : 567. 1789. 



Convolvulus peunafif alius SdiWsh. Prodr. 124. 1796. 



Convolvulus Quamoclit Spreng. Syst. I : 591, 1825. 



Quamoclit vulgaris Choisy, Mem. Soc, Phys, Genev. 6 : 434. 



1833- 

 Ipomoca cyamocUta St. Lag. Ann. Soc. Bot. Lyon 7 : 128. 1880. 



Quamoclit Quamoclit Britton ; Britton & Brown, IllusL Fl. 3 : 22. 

 1898. 



Stems several m. long, glabrous: leaf-blades 2-10 cm. long, 

 the pinnate segments narrowly linear ; petioles shorter than the 

 blades with numerous short leafy branches in their axils appearing 

 stipule-like: peduncles commonly longer than the leaves; pedi- 

 cels 25-30 mm, long, thickened and fleshy at least in fruit : sepals 

 oblong, obtuse, mucronate, 3-5 mm. long: corolla scarlet or 



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