LAMIACEAE 1027 



2. Brazoria scutellarloidea (Hook.) Engelm. & Gray. Perennial, glabrous below 

 the inflorescence. Stems erect, about 3 dm. tall, paniculately branched : leaf-blades oblong 

 or oblong-lanceolate, or oblong-spatulate, acute, serrate above the middle, sessile and partly 

 olasping at the base : racemes densely glandular-puberulent, 3-15 cm. long, interrupted 

 below : bracts ovate, 3-4 mm. long, acuminate : calyx 3-4 nun. becoming 5 mm. long, 

 glandular-puberulent : tube turbinate-campanulate, abruptly contracted at the base, the 

 upper lip with ovate-reniforni acuminate lobes, about as long as the tube, the lower lip with 

 ovate acuminate teeth : corolla about 1 cm. long ; tube abruptly dilated at the middle, the 

 upper lip suborbicular, rather broader than long, the lower lip with 3 broad lobes, the 

 middle one retuse : nutlets a little more than 1 mm. thick, rather granular, glabrous. 



On rich prairies, Texas. Spring. 



13. MACBRIDEA Ell. 

 Perennial herbs, with glabrous or sparingly puberulent foliage and simple or rarely 

 branched stems. Leaves opposite : blades thickish, entire or repand-toothed. Flowers in 

 axillary clusters, which are often approximate and form contracted panicles. Calyx mem- 

 branous : tube campanulate : lobes 3, the 2 lower broad. Corolla white, pink or purple : 

 tube dilated above : upper lip arching, entire or notched : lower lip with rounded lobes, 

 the middle one largest. Stamens 4 : filaments all anther-bearing : anthers pubescent ; sacs 

 divergent ; nutlets smooth or nearly so. 



Corolla white, the upper lip notched. 1. M. alba. 



Oorolla rose-purple, streaked with purple and white, the upper lip entire. 2. il. pulcUra. 



1. Macbridea dlba Chapm. Stems erect, 3-5 dm. tall, simple or rarely branched : 

 leaf-blades cuneate-spatulate or oblong, rather fleshy, 2-8 cm. long, obtuse, undulate or 

 repand, the lower ones with margined petioles, the upper sessile : panicles few flowered : 

 bracts oblong-ovate or orbicular, obtuse : pedicels very short : calyx becoming 1 cm. long, 

 glabrous or nearly so ; lobes about as long as the tube, the larger ones slightly notched : 

 corolla white, 2.5-3 cm. long, the upper lip hooded, nearly erect, tlie lower lip spreading, 

 the lobes emarginate or nearly truncate. 



In pine-land swamps. Florida. Summer. 



2. Macbridea pulchra Ell. Stems erect, 3-6 dm. tall, usually simple : leaf-blades 

 elliptic, oblong or linear-elliptic, 4-8 cm. long, acute or acuminate at both ends, undulate 

 or repand-serrate, the lower slender-petioled, the upper sessile : panicles few-flowered : 

 bracts ovate or oblong, mostly obtuse : pedicels very short : calyx becoming 1 cm. long ; 

 lobes shorter than the tube, entire or the larger ones oblique or emarginate : corolla rose- 

 purple striped with white and purple, 3-3.5 cm. long ; tube abruptly dilated near the 

 middle, the upper lip suborbicular, 1 cm. in diameter, the lower lip with a notched middle 

 lobe and truncate lateral lobes. 



In swamps, North Carolina to Florida and Alabama. Summer and fall. 



14. PHYSOSTEGIA L. 



Perennial herbs, with glabrous or puberulent foliage and simple or sparingly branched 



stems. Leaves opposite : blades rather narrow, usually toothed above an entire base. 



Flowers in terminal spike-like racemes. Calyx campanulate, more or less inflated and open 



at maturity : tube 5-ribbed : lobes 5, equal. Corolla white, pink, violet or purple, showy, 



2-lipped : tube dilated upward : upper lip entire : lower lip 3-lobed, the middle lobe often 



emarginate. Stamens 4 : filaments all anther-bearing : anthers 2-celled ; sacs parallel or 



nearly so. Nutlets somewhat 3-angled, smooth. 



Corolla less than 2 cm. long. 



Mature calyx campanulate. 5 mm. long, or shorter : stems naked or sparingly leafy above : Texan 



species. 1. P. intermedia. 



Mature calyx tubular, 8-9 mm. long : stems copiously leafy to the inflorescence : 



Georgian species. 2. P. veronidformis . 



Corolla over 2 cm. long. 



Leaf-blades entire or with blunt teeth. 



Racemes loosely and relatively few-flowered, interrupted at maturity. 



Mature calyx campanulate, 5-6.5 mm. long: upper leaves but slightly re- 

 duced. ' 3. P. Icptophylla. . 

 Maturecalyx tubular, 9-11 mm. long : upperleaves conspicuously reduced. 4. P. denticidata. 

 Racemes closely manv-flowered. continuous. 5. P. I>igitalif. 

 Leaf-blades copiously toothed with very acute serrations. 6. P. Viiffiniana. 



1. Physoategia interm6dia (Nutt. ) A. Gray. Stems erect or ascending, 3-9 dm. 

 long, simple or rarely branched : leaves few ; blades linear to linear-lanceolate, 2-6 cm. 

 long, acute or acuminate, nearly entire or repand-denticulate, sessile : racemes spike-like : 



