638 LIX. SAXIFRAGEJE. [Sazifragec. 
Species in sectiones 3 commode dispositze, nempe: 
$ 1. Calyx inflatus, 5-dentatus. Petala pinnatifida, sessilia, parva. Semina inet testa rugosa, 
Txrrrwa, Br. l.c. Lindl. Bot. Reg. t. 1178. 
$ 2. Calyx turbinatus, 5-lobus. Petala unguiculata, 3-loba v. pinnatifida. Semina minuta, testa 
levi. Zook. Fl. Bor. 4Am.i.0. 18 A. LrrHoPHRAGMA, Torr. ef Gragi Fl. .N. Am. 1. 583. 
$ 3, Calyx cyathiformis, Petala integra. 
13. mritella, Linn. Gen. n. b61.— Calycis tubus brevis, apertus, ultra ovarium dilatatus, 
et basi eo adhzrens; lobi 5, patentes, valvati. Petala 5, fauci calycis inserta, 8-fida v. 
pectinatim pinnatifida, laciniis capillaribus. Stamina 10 (v. 5 petalis opposita v. alter- 
na), brevia, cum petalis inserta; antherz cordate v. reniformes. Ovarium globosum, 
superum, l-loculare; styli 2, breves, terminales, stigmatibus capitellatis; ovula oo, pla- 
centis parietalibus affixa. Capsula subglobosa, l-locularis, erostris, apice exserta, 2-valvis, 
polysperma, Semina parva, erecta v. horizontalia, obovoidea, testa levi nitida.—Herbs 
radice v. rhizomate perenni. Folia longe petiolata, cordata, lobata v. erenata. Stipulsm 
membranaces, petiolo adnatz. ^ Scapus gracilis, erectus, nudus v. 1-2-foliatus. Racemi 
elongati, tenues, multiflori. Flores distantes, sspe secundi et nutantes, parvi, virescentes, 
minute bracteolati. 
Species 5, Amerieze borealis incolz, unica in Asiam maxime boreali-orientalem vagans, Torr. et 
Gray, Fl. N. Am. i. 685. Walp. Hep. ii. 371. Bot. Heg.t.166. Bot. Mag, 2933. Hook. FI. 
Bor. Am. i. t. 82. 
Dnuwwoxnia, DOC. Prod. iv. 49, est M. pentandra, Hook. 
Mrrzrropsis, Meissn. Gen, 136, Comm. 100;  Walp. Rep. ii. 370, includit pocieá pentandras. 
14, Eeuchera, Linn. Gen. m. 920.—Calycis tubus campanulatus, ultra ovarium longe 
produetus, e£ basi eo adhzerens, lobis b imbricatis interdum insqualibus. Petala 5, raris- 
" sime 0, parva, integra, ori calycis inserta. Stamina 5, cum petalis inserta, filamentis 
brevibus v. elongatis. Ovarium fere inferum, l-loculare; styli 2, elongati; ovula oo, pla- 
centis 2 parietalibus inserta. Capsula infera, apice inter stylos 2-valvis, 2-rostris, rostris 
exsertis, polysperma. Semina parva, testa minute muricata v. hispidula.—Herbe annue, 
rhizomate perenni crasso, scapigerse, seepe elatze, pilosce v. glanduloss, scapo nudo v. parce 
foliato. Folia radicalia longe petiolata, late cordata v. orbiculata, lobata v. crenata. Sti- 
pulse membranaces, petiolo adnatz. Flores inter minores, spicati racemosi v. paniculati, 
bracteati, glabri v. pubescentes. 
Species ad 20, Amerieze borealis temperate a Mexico fere ad regionem arcticam incole. DC. 
Prod.iv. 651. Torr. et Gray, Fl. N. Am.i. 611. — Walp. Hep.ii. 869: A4nn.i. 337; ii. 897; v. 29. 
Hook. Fl. Bor. Am. i. t. 79. .Bot. Heg. t. 1302, 1924. 
15. 'Tolmiea, Torr. et. Gray, Fl. N. Am. i. 582.—Oalycis tubus elongatus, infundibuli- 
formi-campanulatus, membranaceus, ultra ovarium (liberum) longe productus, longitudi- 
naliter fissus, lobis 5 insqualibus imbricatis. Petala 5, capillaria, inter lobos calycis 
inserta, pendula. Stamina 3, lobis totidem superioribus calycis oppositis, filamentis elon- 
gatis; anthere peltats, loculis confluentibus. Ovarium anguste oblongum, basi attenua- 
tum, l-loculare, longe 2-fidum ; styli 2, subulati, stigmatibus capitellatis; ovula oo, pla- 
centis parietalibus inserta. Capsula e calyce exserta, supera, elongata, apice inter stylos 
2.valvis, 2-rostris, polysperma. Semina minuta, globosa, muricato-hispidula.—Herba 
annua, rhizomate perenni, glanduloso-pubescens, caulibus simplicibus. Folia caulina 
alterna et radicalia petiolata, cordata, inciso-lobata.  Stipule' membranaces. Racemi ter- 
minales, graciles, simplices. Flores subsecundi, nutantes, virides, nervis calycis purpureis, 
bracteis parvis, bracteolis setaceis. 
Species 1, Amerieze boreali-oecidentalis incola. Hook. Fi. Bor. Am. i. 4. 80 ( Tiarella). 
16. Chrysosplenium, Linn. Gen. n. 558.—Calycis tubus urceolatus v. obconieus, ovario 
adnatus, lobis 4—5 obtusis imbricatis. Petala 0. Stamina 8-10 (rarius 4), margini disci 
epigyni nune lobati inserta, filamentis brevibus; anthers didym:s. Ovarium inferum, 
l-loeulare; superne in lobos 2 (rarissime 3) — desinens; styli breves, recurvi, stig- 
