44 The Ohio Journal of Science [Vol. XX, No. 2, 



1. Leaves flat, broad or narrow. 2. 



1. Leaves subulate and rigid, sharp pointed, mostly crowded and fascicled; stems 



long, creeping, sending up flowering shoots usually with few flowers; corolla 

 pink or rose, turning purple with age, rarely white, each petal with deeper 

 spots at the inner and a deep notch at the outerend. P. suhulata. 



2. Panicle narrow, usually compact, elipsoid or elongated; stem erect, purple 



spotted, leaves ovate-lanceolate, usually tapering to the apex from a broad 

 base. P. maculata. 



2. Panicle or corymb flat-topped or broadly pyramidal; stem not spotted. 3. 



3. Cymes panicled and broadly pyramidal, pedicels and peduncles very short; 



stem strictly erect with oblong-lanceolate to ovate-lanceolate leaves; the 

 large veins uniting prominently near the margin. P. paniculata. 



3. Cymes corymbose, simple, or flowers scattered; pedicels and peduncles long, 



or if short then the plants not strictly erect. 4. 



4. Plants glabrous or nearly so; calyx teeth shorter than the tube, triangular- 



subulate; corolla lobes rounded, entire, pink or rose. 5. 



4. Plants pubescent; calyx teeth longer than the tube, slender; corolla blue or 



turning purple with age. 6. 



5. Flowers long pedicelled; leaves linear-lanceolate, or rarely oblong-lanceolate; 



calyx teeth very long pointed. P. glaherrima. 



5. Flowers short pedicelled; leaves oblong-lanceolate, upper ones ovate-lanceo- 



late; calyx teeth acute. P. ovata. 



6. Plants with prostrate or creeping vegetative shoots, the leaves of which are 



mostly of the ovate-lanceolate type; calyx teeth rather short pointed. 7. 



6. Plants without prostrate or creeping shoots, erect or ascending; leaves mostly 



of the lanceolate type, usually long tapering; calyx lobes with long bristle 

 tips. P. pilosa. 



7. Corolla lobes obcordate or wedge-obovate, notched or entire, about the length 



of the tube, pale lilac or bluish; leaves of the vegetative shoots of an eliptic 

 or oblong type, sessile; plants glandular-pubescent. P. divaricata. 



7. Corolla lobes round-obovate, mostly entire, about J4 inch long, reddish- 

 purple, leaves of the vegetative shoots of the spatulate type, petioled; plants 

 sparingly pubescent. P. stolonifera. 



1. Phlox maculata L. Spotted Phlox. Plant with erect, sim- 

 ple or branched stem, sparingly pubescent and usually flecked 

 with purple. Leaves ovate-lance.olate, usuall}^ tapering to the 

 apex from a broad base, sessile; flowers short-pedicelled, in a 

 compact ellipsiod or elongated narrow panicle; calyx teeth 

 triangular-lanceolate, acute or acuminate, about one-fourth the 

 length of the tube; corolla blue, pink, or purple. Rather general 

 in woods and moist places. June-August. 



2. Phlox paniculata L. Garden Phlox. Plant with erect, 

 stout or slender stem which is simple or slightly branched 

 above; usually glabrous, sometimes puberulent. Leaves oblong 

 lanceolate to ovate-lanceolate with closed venation; flower cymes 

 panicled, broadly pyramidal; calyx teeth more than one-half 

 the length of the tube; corolla pink, purple, or white, its lobes 

 obovate, entire, shorter than the tube. General. Escaped from 

 gardens. July-September. 



