DELPHINIUM. 1. RANUNCULACE^E. 145 



10. ISOPfRUM. 



Sepals 5, petaloid, deciduous ; petals 5, small, tubular, sometimes 

 0; stamens 10 40; ovaries 3 20; follicles subsessile, acuminate 

 with the style, 2-several-seeded. Delicate herbs, with haves 2 3-ter- 

 nate, segments 2 %-lobed. Fls. pedunculate, axillary and terminal, white. 

 I. BITEB.NATUM. Torr. and Gray. (Enemion. /?/".) 

 Low, erect, glabrous ; petioles auricled at base ; Iv s. membranaceous ; pet. 

 : carpels 36, broadly ovate, divaricate, sessile, strongly veined, 2-seeded ; sds. 

 obovat<?, compressed, smooth and shining. 7J. Damp shades, Western States. 

 Root fibrous. Stems several, 4 10' high. Leaves mostly biternate, petiolules 

 longer than the petioles, segments cuneate-obovate, 4 6" long. Flowers on 

 slender peduncles 1 2' long. May. 



11. AQ.UILEG1A. 



Lat. aquila, the eagle ; the spurred petals resemble the talons of a bird of prey. 



Sepals 5, equal, ovate, colored, spreading, caducous ; petals 5, tu- 

 bular, dilated at the mouth, the outer margin erect, the inner 

 attached to the torus, extending behind into a long, spurred nectary ; 

 stamens 30 40, the inner ones longer and sterile ; styles 5 ; fol- 

 licles 5, many seeded. % Fls. nodding. 



1. A. CANADENSIS. Wild Columbine. (Fig. 39.) 



Glabrous; divisions of the leaves 3-parted, rather obtuse, incisely dentate; 

 sep. rather acute, longer than the corolla ; spurs straight, longer than the limb ; sta. 

 and sty. exserted. This beautiful plant grows wild in most of the States, in 

 dry soils, generally ofi the sunny side of rocks. It is cultivated with the 

 greatest ease, and is much more delicate in foliage and in the hues of its flowers, 

 than the common blue Columbine. Stem branching, a foot high, with ternate, 

 lobed leaves. Flowers terminal, scarlet without and yellow within, pendulous, 

 much embellished by the numerous descending, yellow stamens and styles. 

 Fruit erect. May. 



2. A. VULGARIS. Common Columbine. Spurs incurved; sts. leafy, many- 

 flowered ; Ivs. nearly smooth, glaucous, bjternate ; sty. a little longer than the 

 stamens. From Europe. Stem 1 2f high, with a profusion of handsome, 

 smooth foliage, and large purple flowers. Leaflets bifid and trifid, with round- 

 ed lobes. In cultivation the flowers become double by the multiplication of 

 the hollow, spurred petals. They also vary in color through all shades from 

 purple to white. Jn.f 



12. DELPHINIUM. 



Gr. (JeX^ti/, a dolphin ; from the fancied resemblance of the flower. 



Sepals 5, colored, the upper one spurred ; petals very irregular, 

 the two upper ones terminating behind in a tubular, nectariferous 

 spur, enclosed in the spur of the calyx ; styles 1 5 ; follicles 1 5. 

 Showy herbs, with leaves much divided. Fls. blue, red or purple, 

 never yellow. 



1. D. CONSOLIDA. Branching Larkspur. 



St. suberect, smooth, with spreading branches ; fls. few, loosely racemcd , 

 ped. longer than the bracts ; sty. 1 ; carpel solitary, smooth. The common 

 larkspur of the gardens, sparingly naturalized, fields and roadsides. Leaves 

 in numerous linear divisions. Jn. Jl. It has numerous varieties of double 

 and semi-double flowers of various colors.^ f 



2. D. EXALTATUM. American Larkspur. 



Petioles, not dilated at base ; Ivs. flat, 3-cleft below the middle, segments cu- 

 neiform, 3-cleft at the end, acuminate, the lateral ones often 2-lobed ; roc. 

 straight ; spur longer than the calyx. Native of the Middle States, rarely of the 

 Northern. Stem 3 4f high, straight, erect. Flowers of a brilliant purplish 



