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130 UNITED STATES AND MEXICAN BOUNDAEY. 



long as the calyx. Upper 



Lower lip S-loLed ; the middle lobe emarginate ; 



lateral ones entire. Stamens 4 ; the two inferior ones perfect and nearlj exserted ; anthers with 

 divaricate oblong cells ; upper stamens reduced to simple short filaments. 



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Hedeoma plicata (n. sp.) : suffruticosa e basi ramosa; ramis erectis pubescentibus ; foliis 



rbombeo-ovatis utrinoue aoutis arp-ntp sf^rratis p.rpbrp pf. Pi^imip -np-nniTiArviTQ GnT^nliVo+ia cni~»ra 



scabriusculis subtus pubescentibus ; corol 

 the Limpio mountains^ July ; Bigelow. 

 high, retrorsely pubescent. Leaves m 



lis calyce gibboso duplo longioribus. Dry ravines near 

 (No. 464 and 1718^ Wright.) Branches about a span 

 »stly shorter than the internodeS; 3-4 lines long, of 

 rather a thick texture^ tapering to a petiole about a line in length, the numerous straight and 

 parallel veins very prominent underneath. Verticils 2-6-flowered, the pedicels 1-2 lines long 

 Calyx gibbous at the base, distinctly 2-lipped ; teeth of the upper lip ovate, 

 length of the subulate ones of the lower lip. Tube of the corolla exserted, 



o» 



more 



lobed 



also emarginate. 



Hedeoma DENTATA (n. sp.) : annua ; ramis erectis gracilibus pubescentibus ; foliis petiolatis 

 oblongo-lanceolatis acutis pauci-dentatis ; venis prominulis ; verticillis remotis 6-10-florLs ; 

 calyce subbilabiato vix gibboso, dentibus e basi lato-subulatis inequalibus, labii superiore diver- 

 gentibus. Kear Santa Cruz, Sonora, September ; Thurher. Near the Copper Mines, October ; 

 JBigeloiv. About a foot high ; much branching from the base, forming a bunch about a foot in 

 diameter ; the internodes of the branches rather distant. Leaves 5 lines long, tapering at the 

 base into a short petiole, acutely 3-4- toothed on each margin ; the veins underneath con- 

 spicuous, thicker at the extremity. . Verticils usually not more than 6-flowered. Calyx slightly 

 gibbous toward the base ; teeth of the lower lip nearly twice as long as those of the upper. 

 Corolla twice as long as the calyx. Upper lip emarginate ; lower 3-lobed, the middle lobe 

 notched. Near H. Drummondi, but in that species the leaves are entire with inconspicuous 

 nerves, and the teeth of the calyx are all connivent. 



Var, nana : foliis minoribus late ovatis vel ovato-oblongis interdum subintegerrimis. Eocky 



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hills of the Rio Grande, near El Paso, April — May. Plant usually from 3 to 6 inches high, 

 much branched from the base, incano- pubescent. Leaves one- third of an inch long. Bracts 

 subulate, shorter than the pedicels. Verticils approximated, 3-12-flowered. Calyx evidently 

 bilabiate, gibbous ; upper teeth much shorter than the lower, subulate-lanceolate from a broad 



+ 



base ; lower teeth subulate. 



Hedeoma iin^cana (n. sp.); fruticosa, ramosissima, incana ; ramis erectis foliosis ; foliis lineari- 

 bus vel oblongo-linearibus inte^errimis obtusiusculis, axillis fasciculatis ; verticillastris 4-6- 

 floris, floribus subsessilibus ; calycibus oblongo-cylindricis villosissimis subaequaliter S-dentatis. 

 Sandy places near El Paso, April — May ; Parry ^ Wright & Bigelow. (No. 1523, Wright.) 

 Plant about 2 feet liigli with the taste and odor of sage ; the branches slender, sometimes 

 apparently assurgent, slender, hoary, like the leaves, with a minute close pubescence. Leaves 

 about three-fourths of an inch long, sessile, tapering at the base, flat. Flowers about 5 lines 

 in length. Calyx densely villous with long white hairs ; the teeth lanceolate. Corolla more 

 than twice the length of the calyx \ upper lip notched j lower 3-lobed, the middle lobe deeply 

 emarginate ; tube short, villous in the throat. Fertile stamens 2, a little exserted ; the connec- 

 tive very thick ; the anther-cells widely divaricate below, opening upward. Abortive rudiments 

 of the superior stamens minute. Style strongly and rather unequally 2-cleft at the summit. 



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