KEY FOR JUNE TO NOVEMBER 



450 a Flowers blue; plant with sticky hairs. .. .Isanthus. p 205 

 b Flowers white to scarlet; plants not with sticky hairs.. 451 



451 a Stalks of flowers Vz-z in. long; leaves not fleshy 



Anagallis. p 198 

 b Stalks of flowers about % in. long; leaves fleshy 



Glaux. p 198 



452 a Ovary inferior 453 



b Ovary superior 455 



453 a Leaves pinnately divided into 7-25 segments 



Valeriana. p 216 



b Leaves simple, not divided 454 



454 a Leaves in whorls on the 4-sided stem Galium. p 213 



b Leaves opposite on the stem Houstonia. p 213 



455 a Leaves with margins sharply toothed 456 



b Leaves with margins more or less entire 457 



456 a Corolla 4-lobed; stamens 2, longer than the corolla 



Leptandra. p 211 

 b Corolla 5-lobed; stamens 4, not longer than the corolla 



Verbena, p 203 



457 a Flowers about ^4 in. or less broad Isanthus. p 205 



b Flowers Vz in. or more broad 458 



458 a Corolla lobes not spreading at right angles to the tube; 



flowers blue Gentiana. p 199 



b Corolla lobes spreading more or less at right angles to 



the tube 459 



459 a Corolla tube much shorter than the lobes. . . .Sabbatia. P 199 

 b Corolla tube nearly as long as the lobes Phlox, p 202 



460 a Ovary inferior 461 



b Ovary superior 463 



461 a Leaves clasping at the base Specularia. p 217 



b Leaves not clasping at the base 462 



462 a Plants erect; perianth 5-lobed; flowers usually blue 



Campanula, p 217 

 b Plant creeping; perianth 3-lobed ; flowers not blue 



As arum, p 145 



463 a Flowers about % in. or less broad 464 



b Flowers Vz in. or more broad 472 



464 a Leaves lobed or pinnately compound. .Hydrophyllum. p 202 

 b Leaves with entire or wavy-toothed margins 465 



465 a Corolla tube closed by 5 scales attached opposite the 



corolla lobes 466 



b Corolla tube without conspicuous scales as in a 467 



466 a Nutlets spreading, entirely covered with prickles 



Cynoglossum. p 202 

 b Nutlets erect or incurved, covered only on the back and 



margins with prickles Lappula. p 202 



54 



