LKPTARRHENA SAXIFEAG ACE^. 189 



7. Uolandra. Petals 5, linear, persistent: stamens 5, inserted in the' 

 throat of the calyx : carpels 2, united at bas6 free from but included 

 in the inflated calyx. 



8. HemieTa. Petals persistent : stamens 5, inserted on the throat of 

 the calyx : carpels united and wholly adnate to the tube of the calyx : 

 leaves not peltate 



* * Ovary 1-celled, with 2-3 parietal or hasal placentae alternate 

 with the styles or stigmas ; filaments all antheriferous. 



9. Leptaxis. Petals 4, filiform, entire, persistent: stamens 2-3, in- 

 serted in the throat of the calyx : capsule 2-valved, attenuate below 

 to a stipe, free from the calyx. 



10. Tellima. Petals 5, deciduous, pectinately lobed or parted: stamens 

 9 or 10, shorf, inserted in the throat of the calyx: capsule 2-valved, 

 sessile, adnate to the base of the inflated calyx. 



11. Lithophragma. Petals Oj deciduous, unguiculate, palmately lobed 

 or entire : stamens 5 or 10, inserted in t e throat of the calyx : cap^ 

 sule mostly 3-valved, free or adnate to the base of the calyx. 



12. Mitella. Petals 5, deciduous, pinnately lobed or parted : stamens 5 

 or 10, very short, inserted in the throat of the calyx : capsule 2- 

 valved, depressed, adnate to the base of the calyx: inflorescence 

 racemose. 



13. Mitellastra. Stamens 5, included connivent : petals 5, deciduous, 

 Styles 2, recurved : inflorescence cymose. 



14. Tiarella. Petals 5, entire: stamens 10, inserted at the base of the 

 calyx : capsule very unequally 2-valved, free from the calyx. 



15. Henchera. Petals 5, entire, deciduous : stamens 5, inserted in the 

 throat of the calyx : capsule equally 2-valved, the lower half adnate to 

 the calyx. 



16. Chrysospleninm. Petals always wanting: stamens 8-10. short, 

 inserted in the throat of the calyx : capsule short, equally 2-valved, 



' the lower half adnate to the calyx. 



* * * Ovary 1-celled, with 3-4 parietal placentse directly under 

 as many obtuse sessile stigmas: stamens 5, alternating with as many 

 clusters oE united sterile, filaments. 



17. Parnassia. Petals 5, large: calyx 5-parted, free from the ovary: 

 flowers solitary. 



1 LEPFAERHENA R. Brown, Parry's Istvoy. Suppl. 273. 

 Herbs with coriaceous persistent leaves crowded at the base of 

 the nearly naked stems and rather numerous flowers in bracted 

 paniculate racemes. Calyx , campanulate, 5-parted, the base 

 adherent to the ovary. Petals 5, entire. Stamens 10, inserted 

 into the tube of the calyx : filaments subulate : anthers 1-celled, 

 2-valved. Ovary of two nearly distinct carpels, tapering into 

 very short styles. Seeds ■ numerous, ascending, scobifcjrm ; the 

 testa loose, elongated and subulate at both ends, including the 

 oval nucleus. 



J^. pyrolifolia Ser. DC. Prodr. iv,' 48. Scape-like stems 8^16 inches 

 high, rigid, a little pubescent or glandular toward the summit, and 1-2' 

 small leaves with sheathing petioles near the base; radical leaves obovate- 

 to oblong or spatulate,' 1-6 inches' long, coriaceous, glabrous both sides,- 

 coarsely serrate above the middle, attenuate below to a short wingecb 



