WOOTON AND STANDLEY FLORA OF NEW MEXICO. 513 



7. GOMPHOCARPTTS 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. 



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



Gyncecium 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 gyncecium in the same axis as the stem; seeds 

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

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

 mostly tuberculate; corolla usually irregular. 



127. SCROPHULARIACEAE (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 L\ 



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



Ovary 2-celled or 4-celled. 



Corolla unappendaged within; plants with normal leaves. 



118. CONVOLVULACEAE (p. 515). 



Corolla appendaged within; parasitic twining plants with 



scalelike leaves 117. CUSCUTACEAE (p. 514). 



Stamens 4 and didynamous, or 1 or 2. 



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



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



Style rising bom between the 4 lobes of the ovary. 



125. MENTHACEAE (p. 551). 

 Carpels ripening into a capsule. 

 Placenta' of the ovary axile. 



Ovary L-celled 129. PINGUICULACEAE (p. 599). 



Ovary 2-celled, rarely IS or 5-Celled. 



Corolla lobes imbricated; capsule- n,,i elastically dehiscent 



127. SCROPHULARIACEAE (p. 575;. 

 52576°— 15 33 



