256 POLEMONIACEAE 



1. Hydrophyllum Virglnioum L. Virginia Water-i,Eaf. (Man. 

 p. 763 ; I. F. f. 2gg6. ) In woods, Quebec to Alaska, south to S. C, 

 Kans. and Wash. — Pennsylvania: Pike ; Monroe ; Northampton; 

 Bucks ; Delaware ; Chester ; Lancaster ; Frankwn ; Hunting- 

 don; Somerset; Allegheny; Erie. 



2. Hydrophylluin appendiculatum Michx. Appendaged WaTER- 

 LEAF. (Man. p. 763; I. F. /. 2i)g8.) In woods, Ont. to N. C, Minn, 

 and Kans. — Pennsylvania : Lancaster ; Allegheny. 



3. Hydrophyllum Canadense ly. Broad-lEAVEd WaTER-lEAE. 

 (Man. p. 763; I. F. f. 2ggg.) In woods, Mass. to N. C, 111. and Ky. — 

 Pennsylvania : Bucks, Nockamixon ; Lancaster ; Sullivan ; Alle- 

 gheny. 



2. MACROCAL7X Trew. 



1. Macrocalyz Nyotelea (L.) Kuntze. NycTELEA. (Man. p. 764; 

 I. F. /. 300 J.) In moist soil, N. J. to Minn., the N. W. Terr., Va., 

 Neb. and Kans. — Pennsylvania : Bucks ; Philadelphia ; Lancaster ; 

 York. 



3. PHACELLA. Juss. 



Corolla with entire or merely crenulate lobes. 1. P. dubia. 



Corolla with fimbriate lobes. 2. P. Purshii, 



1. Phacelia dubia (L.) Small. Small- elowered Phacelia. (Man. 

 p. 765; I. F. /. 3006.) In moist soil. Pa. to Ga., Kans. and Tex. — 

 Pennsylvania : Lancaster ; Perry. 



2. Phacelia Purshii Buckl. Pursh's PhacELIA. (Man. p. 765 ; I. 

 F. _/. 3oog.) In moist woods or thickets. Pa. to Minn., N. C, Ala. 

 and Mo. — Pennsylvania : York ; Lancaster ; Fayette ; Washing- 

 ton ; Allegheny. 



Family 4. POLEMONIACEAE DC. Phlox Family. 



Capsule rupturing the normally distended calyx : leaves opposite. 



I. Phlox. 

 Capsule loosely enclosed in the calyx : leaves alternate. 2. Polemoniitm, 



1. PHLOX L. 



Leaves with dilated blades, sometimes narrow but not subulate. 

 Plants without prostrate and creeping sterile shoots. 

 Calyx-lobes shorter than the tube. 

 Calyx-lobes bristle-like, or bristle-tipped. i. P. paniculaia. 



Calyx-lobes lanceolate to nearly triangular. 

 Calyx-lobes less than J4 as long as the tube. 2. P. maculata. 



Calyx-lobes 'A or 'A as long as the tube. 3. P. ovata. 



Calyx-lobes longer than the tube. 4. P. pilosa. 



Plants with prostrate or creeping sterile shoots. 

 Leaf-blades of the sterile shoots of an elliptic or oblong type, sessile. 



5. P. divaricata. 

 Leaf-blades of the sterile shoots of a spatulate type, petioled. 



6. P. repians. 

 Leaves with subulate rigid blades. 7. P. subulate. 



