56 SAXIFRAGACEjE. 



4. T. heterophylla, JEL & A. Similar, very slender: petals acute. Gent. CaL 



5. T. affinis, Bolander. Stouter: calyx-tube rough, partly adnate. Cal. 



6. T. parviflora, Hook. Calyx obconical: ovary half inferior. Or. Wash. 



7. T. tenella, Walp. Slender, 2-9 in. high: ovary nearly free. N. E. CaL 



8. TIARELLA, Linnaeus. 



L T. unifoliata, Hook. Leaves 3-5-lobed, crenately toothed. S. F Bay, N, 

 2. T. trifoliata, L. Most of the leaves 3-foliolate. Or. to Alaska. 



9. MITELLA, Tournefort. 



1. M. BreWBri, Gr. Leaves 2-3 in. broad: scapo naked: petals J in. long. S.N. Mts, 



2. M. trifida, Grah. Petals smaller, 3-5-parted. In shade. Coast Ranges. 



'8. M. caulescens, Nutt. Stouter: 1 or more leaves on scape. Klamath River, N. 



10. HETJCHEBA, Linnaeus. 



1. H. glabra, Willd. Leaves acutely lobed, incised: panicle loose. Or., N. 



2. H. rubescens, Torr. Leaves crenately lobed -1 in. broad. S. N. Mts., N. & E, 



3. H. micrantlia, Dougl. Leaves obtusely lobed, crenate, 2-4 in. broad. 



4. H. pilosissima, F. & M. Very villous, viscid: calyx-base rounded. Cal. Coast. 



5. H. cylindrica, Dougl. Flowers nearly spicate, - in. long:.petals minute. 



11. PARNASSIA, Tournefort. 



1. P. palustris, L. Leaves ovate to ovate-cordate J.I in. long: petals in. long* 

 Vftr. Califomica, Gr. Larger in every way. In wet places, mountains. 



2. P. fimbriata, Banks. Leaves reniform to cordate: appendages few or a scale. 



12. CHRYSOSPLENITTM, Linnseus. 

 1. 0. glechomODfolium, Nutt. Decumbent in wet places: leaves J- in. long. 



13. PHILADELPHTTS, Linnaaus. 



1. P. Lewisii, Pursh. Spreading, 3-5 ft. high: stigmas narrow. S. N. Mts. 



2. P. Gordonianus, LindL Larger in every way: leaves mostly toothed. Coast* 



14. CAKPENTEBIA, Torrey. 

 1. O. Califomica, Torr. Leaves narrowly lanceolate. King's River, Cal 



15. WHIPPLEA, Torrey. 

 L W. modesta, Torr. Stems slender, spreading: calyx and corolla white. 



