I 



WOOTON AND STANDLEY FLORA OF NEW MEXICO. 513 



7. GOMPHOCARPUS R. Br. • 



Tomentose perennial, similar to Asclepias, but. differing in the absence of horns or 

 crests to the hoods. 



1. Gomphocarpus hypoleucus A. Gray, Proc. Amer. Acad. 17: 222. 1882. 

 Type locality: Santa Rita Mountains, Arizona. 

 Range: Southern New Mexico and Arizona and southward. 

 New Mexico: Turkey Creek, Mogollon Mountains {Metcalfe 566). 



Order 45. POLEMONIALES. 



KEY TO THE FAMILIES. 

 Stamens 5. 



Gynoecium of 2 distinct carpels 116. DICHONDRACEAE (p. 514). 



Gynoecium of 2 or more partially or wholly united carpels. 

 Fruit drupaceous or of 2 or 4 nutlets. 



Style or stigmas furnished with a glandular ring. 



122. HELIOTROPACEAE (p. 537). 

 Style or stigmas without a glandular ring. 



Fruit a group of 2 or 4 nutlets; style arising from between the 



lobes of the ovary 123. BORAGINACEAE (p. 538). 



Fruit drupaceous; style terminating the lobeless ovary. 



121. EHRETIACEAE (p. 535). 

 Fruit capsular or baccate, the ovary never 4-lobed. 

 Styles or stigmas wholly united. 



Median axis of the gynoecium in the same axis as the stem; seeds 

 mostly pitted; corolla regular. . .126. SOLANACEAE (p. 566). 

 Median axis of the gynoecium not in the axis of the stem; seeds 

 mostly tuberculate; corolla usually irregular. 



127. SCROPHTJLARIACEAE (p. 575). 

 Styles or stigmas distinct. 



Ovary 3-celled; stigmas 3. 



Calyx lobes imbricated; corolla mostly plaited in the bud. 



118. CONVOLVULACEAE (p. 515), 

 Calyx lobes valvate; corolla merely convolute in the bud. 



119. POLEMONIACEAE (p. 519). 

 Ovary 1 or 2-celled, rarely 4-celled; stigmas 2. 



Ovary 1-celled 120. HYDROPHYLLACEAE (p. 530). 



Ovary 2-celled or 4-celled. 



Corolla unappendaged within; plants with normal leaves. 



118. CONVOLVITLACEAE (p. 515). 

 Corolla appendaged within; parasitic twining plants with 



scalelike leaves 117. CUSCXITACEAE (p. 514). 



Stamens 4 and didynamous, or 1 or 2. 



Carpels ripening into nutlets (grouped in 4's) or into achenes or drupes. 



Style apical on the entire ovary 124. VERBENACEAE (p. 548). 



Style rising from between the 4 lobes of the ovary. 



125. MENTHACEAE (p. 551). 

 Carpels ripening into a capsule. 

 Placentae of the ovary axile. 



Ovary 1-celled 129. PINGtnCTJLACEAE (p. 599). 



Ovary 2-celled, rarely 3 or 5-celled. 



Corolla lobes imbricated; capsules not elastically dehiscent. 



127. SCROPHTJLARIACEAE (p. ^75). 

 52576°— 15 33 



