LABIA TAE. 297 



24. BLEPHILIA Raf. 

 Perennial hirsute or pubescent erect herbs, with axillary and terminal dense 

 glomerules of purplish or bluish flowers, or the glomerules in terminal interrupted 

 spikes Calyx tubular, 13-nerved, not villous m the throat, 2 -lipped, the upper lip 

 5-toothed, the lower 2-toothed, the teeth all aristate or those of the lower lip sub- 

 ulate. Corolla glabrous within, the limb 2-lipped; upper lip erect, entire; lower 

 lip 3-lobed, the middle lobe narrower than the lateral ones. Anther-bearing 

 [anterior) stamens 2, ascending; posterior stamens reduced to filiform staminodia, 

 3r none; anthers 2-celled, the sacs divaricate, somewhat confluent at the base. 

 Nutlets ovoid, smooth. [Greek, eyelash, from the fringed calyx-teeth.] Two or 

 three species, natives of eastern N. Am. 



Pubescence short; upper leaves lanceolate or oblong, slightly serrate. 1. B. ciliata. 



Pubescence villous; leaves ovate or ovate-lanceolate, sharply serrate. 2. B. hirsuta. 



i. Blephilia ciliata (L.) Raf. Downy Blephilia. (I. F. f. 3139.) Stem 

 puberulent, or with some short-villous pubescence above, commonly simple, 

 j-6 dm. high. Lower leaves and those of sterile shoots ovate or oval, crenate- 

 ienticulate, 2-5 cm. long, the upper short-petioled or sessile, longer and narrower; 

 :lusters in a terminal spike and in the uppermost axils; outer bracts ovate to lance- 

 olate, acuminate, usually purplish, ciliate; calyx hirsute, the teeth of the upper lip 

 ibout one-third longer than those of the lower; corolla purple, villous-pubescent, 

 10-12 mm. long. In dry woods and thickets, Mass. to Mich., Wis., Ga. and Mo. 

 [une-Aug. 



2. Blephilia hirsuta (Pursh) Torr. Hairy Blephilia. (I. F. f. 3140.) 

 Stem villous-pubescent, usually branched, 3-9 dm. high. Leaves membranous, 

 i>vate or ovate-lanceolate, acuminate, 5-10 cm. long, or the lower shorter and 

 r oroader; clusters axillary, or in a short terminal spike; outer bracts lanceolate or 

 } linear-lanceolate, long-acuminate, hirsute; calyx-tube nearly glabrous, its teeth 

 very villous, those of the upper lip much exceeding the lower; corolla pubescent, 

 j pale purple, darker-spotted, 8-10 mm. long. In woods and thickets, Vt. to Wis., 

 iKans., Ga. and Tex. June-Sept. 



Blephilia hirsuta glabrata Fernald. Stem glabrous, or villous only above; head soli- 

 :ary, or with one or two additional lower ones. Vt. 

 5 



25. HEDEOMA Pers. 



Aromatic and pungent herbs, with small leaves, and small blue or purple 



flowers in axillary clusters, these crowded into terminal spikes or racemes. Calyx 



:; tubular, 13-nerved, villous in the throat, the mouth mostly contracted in fruit, 



•2-lipped, or nearly equally 5-toothed, the upper lip 3-toothed, the lower 2-cleft. 



I Corolla-limb 2-lipped. the upper lip erect, entire, emarginate or 2-lobed, the lower 



I spreading, 3-cleft. Perfect stamens 2, ascending under the upper lip, their anthers 



l-celled. the sacs divergent or divaricate. Sterile stamens (staminodia) 2, minute, 



j >r none, very rarely anther-bearing. Nutlets ovoid, smooth. [Greek, sweet smell.] 



ii\bout 15 species, natives of Am. Besides the following, some 8 others occur in 



the Southern States. 



ifreeth of the upper lip of the calyx triangular; leaves serrate. 1. H. pulegioides. 



Teeth of both lips of the calyx subulate; leaves entire. 



Calyx-teeth all nearly equal; annual. 2. //. hispida. 



Teeth of the lower lip nearly twice as long as the upper; perennial. 



3. H. Dnimmondii. 



i. Hedeoma pulegioides (L.) Pers. American Pennyroyal. (I. F. f. 



J141.) Annual; stem slender, much branched, finely soft-pubescent, 1.5-4.5 dm. 



ligh. Leaves ovate to ovate-oblong, petioled, sparingly serrate, mostly obtuse, 

 glabrous, or sparingly pubescent, thin, 1-4 cm. long, the upper smaller; clusters 

 I .lew- flowered, rather loose; pedicels shorter than or equalling the calyx; calyx pu- 

 * descent, gibbous, oblong-ovoid in fruit, its 3 upper teeth acute, not exceeding the 2 

 i subulate hispid lower ones; corolla purple, about 6 mm. long; rudimentary stamens 



nanifest. rarely anther-bearing. In dry fields, N. S. to Out. and Minn., Fla. and 



Kans. July-Sept. 



2. Hedeoma hispida Pursh. Rough Pennyroyal. (I. F. f. 3142.) Annual; 



tern 0.7-2 dm. high, pubescent. Leaves linear, firm, sessile, or the lower short- 



