250 : FLORA OF PHILADELPHIA. 



4. OXYCOCCUS Salisb. 



1. Oxtcoccus maceocakpus (Ait.) Pers. Cranberry. M. p. 711. Bogs. 

 Summer. ... 



Philadelphia — Byberry, Mart. (B. C), Germantown, extinct ' (Me.). 

 Bucks— Springfield (Pr.). Montgomery— (P.). Delaware— Tinicum, 

 Bhoads' Swamp, Marple (B. Sin.). Chester— (P.). Lancaster— (P.). 

 Northampton — (P.) . 

 New Jersey — Common. 

 New Castle— Thompson's. Bare. 



Family 6. DIAPENSIACEAE Link. Diapensia Family. 



1. Pyxidanthera BAEBftLATA Michx.. Pyxie, Flowering Moss. M. p. 712. 

 Sandy pine-barrenSi Eauly spring. 

 New Jersey — Common. 



Order 2. PRIMULALES. 



Style 1; fruit a capsule. Pam. 1. Primulaceae. 



Styles 5; fruit an achene or utricle. Pain. 2. PVwmbaginaceae. 



Family 1. PRIMULACEAE Vent. Primrose Family. 



Lobes or segments oi the corolla' erect or spreading. 

 Lobes of the corolla imbricated, at least in the bud. 

 i . ■ , . Ovary whplly, s.uperipr. . « 1. Hottonia. 



Ovary adnate to the calyx. 2. Samplus. 



Lobes of the corolla convolute or valvate, at least in the bud (corolla 

 wanting in No. 7). . i .' , 



Capsule longitudinally dehiscent. 

 v Corolla rotate, or rarely short-funnelform. 

 Stem leafy throughout; flowers yellow. 



Staminodia none; corolla-lobes convolute. 



3. LyMmaeMa. 

 staminodia 5:; each corolla-lobe curved around its 



stamen. ,..,.,,,,., 4. Stewonema. 



S,taminodia 5, tooth-like; flowers in axillary, spike- 

 like racemes Oi heads. 5. Naumbergia. 

 Leaves whorled at the top of the stem; flowers whitei 

 .,-,,•, 6., Trientalis. 

 (jorolla none; flowers minute, solitary in the axils. 



7. Glaux. 

 ■ Capsule circumscissiie ; flowers axillary. 8. Anagallis. i 



Segments of the corolla reflexed; plants scapose. 9. Dod\eeatheon. 



1. riOTT6nflA L. 

 1. Hp^tonia inflAjTA Ell. , Feather-foil, Water Violet. M. p. 715,. Ponds 

 and jditches, Summer.,, . 



jSaite^— B}ddleton, , fl£ o^o^/iTT-Eatontpwn (C^) . 

 flew CQstle— Jfe^r, Ogletpwn. ■,,, l . l _, i ,,,.,.,„, ■ - 



2. SAMOLU8 L.' 



l.PiSAMOLUsiFLOjHBUNDUS H. B. E. Water Pimpernel, Brookweed. M. p. '. 

 715. Wet places. Summer. 



