PENTANDRIA. MOXOGTNIA, 117 



grooves on tlie inside. Stamina exserted. Style 

 filiform, stigmata 2. Cajysule 2-cell(d, 2-valvfd, 

 4-secded, each of the valves septit'erous in the 

 centre. 



Pubescent, leaves alternate, pinnatifld; flowers in unila- 

 teval spikes ni- lact-mes, simple or bifid, axillary and tei mi- 

 ral. In P. bipivinutifida the nlaniei-ts ot llie staminsi are 

 bearded in the iT.iud!r,as in Hydrophylhim. 



Species. 1. P. bipiiinatijida. 2 hetei-ophyUa. o.Jimbri- 

 ata. Conimon in alluvial sods, throug-liou the wes.ern 

 parts o[ Penns} Ivania and Oi.io. 4. parvijloruy Pursh. Pro- 

 bablv an ElUsia. 



A i^tnus confined to North America. The P.fimbriatei 

 is jirobably an F.Uisia. 



178. HYDROPHYLLUM. L. (^Yater-Ieaf.) 

 Calix o parted. Coro//a canipanulate, s-rleft, 



with 5lon,situ(linHl mai-gined meilifprous grooves 

 on the inside. Stamina exsi-rted, filaments heai-d- 

 ed in ^he ini'idie. Stigma bifid. Capsule globose, 

 1 -celled, 2-valved, 1 -seeded, 3 other seeds most- 

 ly abortive. 



Leaves palrrate, or pinnatifld; flowers corymbose, co- 

 rymbs reciii'VLd, pedunculate, terminal, or opposite the 

 leaves. The i^enus Phacelia is too nearly allied to Hydro- 

 phylhim to admit of separation; m an early state there is 

 even no difference in their fruit. 



Species. 1 H. appjendicu'ati'm. 2. virgimcum. 3. ca- 

 nademe. 4P liusare, Hu.sb. Probably not of this genus. — 

 With the exception o\' H. magellanicumy this genus is con- 

 fined -k) North America, 



179. ELLISIA. L, 



Calix deeply 5-parted. Corolla smaller, fun- 

 nel-form, 5 cleft, internally naked. Stamina nnt 

 exserted; filaments smooth; anthers roundish. 

 Stigma bifid. Capsule 2-ceiicd, 2-va)ved, seated 

 in tiie stellate or spi-eading ralix, cells 2seeded5 

 seeds one upon the other? punctate. 



Herbaceous, diffuse, and dichotomous; leaves pinnatifld; 

 solitary peduncle or ractme, for the most part opposits 

 the leaf. 



