694 



LABIATAE (MINT FAMILY) 



ments ; anther-cells divergent and at length confluent. — Low annuals, some- 

 what clammy-glandular and balsamic, branched, with entire leaves, and mostly 



solitary 1-flowered pedicels terminating the branches, 

 becoming lateral by the production of axillary branch- 

 lets, and the flower appearing to be reversed, namely, 

 the short teeth of the calyx upward, etc. Corolla blue, 

 varying to pink, rarely white, small ; fl. in summer and 

 autumn. (Name composed of Opi^, hair, and crTij/xa, 

 stamen, from the capillary filaments.) 



1. T. dich6tomum L. (Bastard Pexnyroval.) 

 Viscid with rather minute pubescence ; leaves lance- 

 oblong or rhombic-lanceolate, rarely lance-linear, short- 

 petioled ; lower lobe of the corolla oblong, longer than 

 the remaining broader ones. — Sandy fields, Me. and 

 Vt. to Ky., Mo., and Tex. Fig. 886. 



2. T. lineare Walt. Puberulent, more slender and 

 less forked ; leaves linear, nearly smooth. — = In sandy 



886. T. dichotomum x Vj- ground near the coast, Ct. to La. 



5. SCUTELLARIA L. Skullcap 



Calyx bell-shaped in flower, splitting to the base at maturity, the lips entire, 

 the upper usually falling away. Corolla with an elongated curved ascending 

 tube, dilated at the throat ; the upper lip entire or barely notched, the lateral 

 lobes mostly connected with the upper rather than the lower lip ; the lower lobe 

 or lip spreading and convex, notched at the apex. Stamens ascending under 

 the upper lip ; anthers approximate in pairs, ciliate or bearded, those of the 

 lower stamens 1-celled (halved), of the upper 2-celled and heart-shaped. — Bitter 

 perennial herbs, not aromatic, the short peduncles or pedicels chiefly opposite, 

 1-flowered, often 1-sided, axillary or spiked or racemed ; fl. in summer. (Name 

 from scutella, a dish, in allusion to the appendage of the fruiting calyx.) 



§ 1. Nutlets wingless, mostly marginless, on a low gynobase. 



* Flowers small (5-8 mm. long), in axillary and sometimes terminal 1-sided 



racemes. 



1. S. Iaterifl5ra L. (Mad-dog S.) Smooth ; stem upright, much branched, 

 1-8 dm. high ; leaves lanceolate-ovate or ovate-oblong, pointed, coareely serrate, 

 rounded at base, petioled, 3-9 cm. long, the lower floral ones similar ; flowers 

 blue, rarely pink or white. — Wet shaded places, common. July-Sept. 



* * Flowers solitary in the axils of the upper leaves or in terminal single or 



panicled racemes ; the floral leaves mostly smaller than the cauline. 



-^ Flowers 1-3 cm. long ; principal stem-leaves more than 2 cm. long. 



•^ Stem-leaves all cordate, crenate-toothed, slender-peti- 

 oled ; lateral lobes of the corolla almost equaling the 

 short upper lip. 



2. S. versicolor Nutt. Soft-hairy, the hairs of the 

 inflorescence, etc., partly viscid-glandular ; stem mostly 

 erect, 3-1) dm. high ; leaves ovate or round-ovate, very 

 veiny, rugose, the floral reduced to broadly ovate subentire 

 bracts about equaling the glandular-hairy calyx ; racemes 

 mostly simple ; corolla tjriglit blue, with lower side and lip 

 whitish. (S. cordifoUa Mulil. ?, nomen subnudum.) — 

 Banks of streams, Pa. to Wise, Minn., and soutiiw. 

 June, July. Fio. 887. 



3. S. saxatilis Kiddell. * Glabrous or slightly hairy; 

 stem weak, ascending, 1-5 dm. long, often producing run- 

 ners, branched; leaves ovate or ovate-oblong, 1.5-5 cm. 



long. 



thin, obtuse ; upper bracts oblong or ovate, small, bsT. s. versicolor x Vj 



