194 ELEMENTS OF BOTANY. 



lobes as long as the tube ; corolla rotate to bell-shaped, 

 5-lobed; stamens 5, equally inserted in the throat of the 

 tube, declined, filaments hairy at the base ; ovary ovoid, 

 ovules several ; fruit a 3-celled, several-seeded capsule, seeds 

 angled. 



P. REPTANS L. Greek Valerian. Perennial, from a short 

 rootstock ; stem smooth, weak, diffusely branched, 9-12 in. high; 

 leaves petioled, odd-pinnate; leaflets 5-13, ovate to elliptical, entire; 

 corymbs peduncled, few-flowered ; flowers nodding, blue, ^ in. wide ; 

 stamens white, included. April-May. Rich, shady woods. 



107. HYDROPHYLLACE^. WATER-LEAF FAMILY. 



Annual, biennial or perennial herbs ; leaves usually alter- 

 nate, sometimes opposite, pinnately or palmately divided; 

 flowers regular, perfect, solitary or in one-sided spikes or 

 racemes ; calyx 5-parted, persistent, often with reflexed ap- 

 pendages in the sinuses ; corolla rotate to funnel-form or 

 salver-form, 5-lobed ; stamens 5, inserted in the base of the 

 corolla and alternate with its lobes, filaments filiform, 

 anthers versatile ; ovary free, 1-celled with 2 parietal pla- 

 centae, or 2-celled, styles 2, distinct or united; fruit a glo- 

 bose or oblong, 2-celled, 2-valved, few-many-seeded capsule, 

 seeds angular, reticulated. 



L HYDROPHYLLUM. 



Biennial or perennial herbs ; stem erect, hairy or pubes- 

 cent ; leaves alternate, long-petioled ; flowers in peduncled 

 cymes, bractless ; calyx tubular, 5-cleft, with linear append- 

 ages on the tube ; corolla broadly tubular or campanulate, 

 5-lobed, the lobes appendaged within; stamens 5, exserted, 

 filaments hairy below ; ovary hispid, 1-celled, with 2 thick 

 fleshy placentae, 4-ovuled, style single, 2-cleft; fruit a glo- 

 bose, 2-valved, 1-4-seeded capsule. 



H. macrophyllum Nutt. Large-leaved Water-leaf. Peren- 

 nial, from a scaly rootstock ; stems stout, erect, hairy, 2-3 ft. high ; 

 leaves pinnately divided or pinnatifid, the divisions irregularly 



