80 NATURAL HIS TORY OF rL.lNTS. 



Flowers solitary, or few in cymes, naked or involucrate [Eitrope, 

 W. Ami, N. America). See p. 12. 



5. Isopyrum L. — Calyx 4 — G-merous, petaloid imbricate deci- 

 duous. Petals (staminodes ?) of variable number gland-like, more 

 rarely 0. Stamens spirally inserted, often few ; anthers sublateral, 

 dehiscing longitudinally. Carpels 2- oo , free, sessile, l-co ovulate, 

 dehiscing as follicles when ripe. — Annual or perennial herbs, with 

 alternate or sub-opposite ternate leaves. Scapes 1- or many- 

 flowered {Europe, Asia, N. America). See p. 18. 



C. Trollius L. — Calyx petaloid 4-a)-merous deciduous, or more 

 rarely persistent. Petals (staminodes ?) of variable number, or 

 more rarely 0. Stamens numerous, spirally inserted ; anthers 

 extrorse or lateral, dehiscing longitudinally. Carpels 5-x), free, 

 sessile, dehiscing when ripe as many-seeded follicles. Seeds smooth 

 or arillate. — Perennial herbs, with palmiveined leaves, entire, lobed, 

 or compound ; blade more rarely with inflexed auricles at the base. 

 Scape one- or few- flowered {Europe, Asia, N. ^ S. America, Australia). 

 See p. 20. 



7? Anemonopsis Sieb. & Zucc.—" Calyx oo-merous petaloid 

 deciduous. Petals cc, sessile shorter than calyx, with a nectariferous 

 pit at the base. Stamens oc, free. Carpels few free sessile multi- 

 ovulate. Fruit ? — Herbs with ternately compound radical leaves. 

 Flowers in lax racemes?" [Japan). See p. 22. 



(S? Glaucidium Sieb. & Zucc. — Calyx 4-merous imbricate 

 petaloid deciduous. Corolla 0. Stamens oo, free, inserted in a 

 spiral ; anthers basifixed ; cells lateral, dehiscing longitudinally. 

 Carpels solitary or few (usually 2), obliquely inserted on the recep- 

 tacles, like follicles when ripe but dehiscing dorsally. Seeds 

 compressed, with winged margins. — A Perennial herb ; leaves lew 

 alternate palmatifid ; flower solitary pedunculate [Japa/i). See 

 p. 23. 



b. Flowers irregular. 



9. Delphinium T. — Calyx o-mcrous irregular imbricate; the 

 posterior sepal more or less galeate or calcarate. Petals (staminodes ?) 



