LAMIACEAE 1041 



bracts subulate, bristly : calyx purplish, becoming 6-7 mm. long, bristly-hispid ; tube 15- 

 ribbed ; lobes subulate, about equal in length, finally converging : corolla slightly surpass- 

 ing the calyx, rose-purple, 8-10 mm. long ; tube not exserted, hairy in the throat ; upper 

 lip notched, the lower lip 3-lobed : sterile filament wanting : nutlets barely 1 mm. long. 



In sandy soil, Texas. Spring and summer. 



2. Stachydeoma graveolens (Chapm.) Small. Perennial, hirsute. Stems 2-6 dm. 

 tall, simple or branched : leaf-blades ovate to suborbicular, 1-1.5 cm. long, sparingly 

 toothed, truncate or subcordate at base, sessile or very short-petioled : panicles elongated, 

 leafy-bracted : calyx becoming about 5 mm. long : tube 12-13-ribbed, the upper lip with 

 deltoid lobes, the lower lip with subulate lobes : corolla purple, spotted, 6-8 mm. long ; 

 tube about equaling the longer calyx-lobes, the upper lip truncate, often undulate, the lower 

 lip with a notched middle lobe : sterile filaments present : nutlets 0.5 mm. long. 



In low pine lands, Florida. Summer. 



27. MELISSA L. 



Perennial herbs, with branching stems. Leaves opposite : blades flat, broad, usually 

 toothed. Flowers in axillary, often one-sided clusters. Calyx reflexed at maturity, 2- 

 lipped : tube 13-ribbed, nearly glabrous in the throat : upper lip with 3 short lobes : lower 

 lip with 2 longer lobes. Corolla white or yellowish, surpassing the calyx, 2-lipped : tube 

 curved, glabrous within : upper lip nearly erect, entire or notched : lower lip 3-lobed, 

 spreading. Stamens 4 : anthers 2-celled ; sacs diverging. Nutlets smooth. BEE-BALM. 



1. Melissa officinalis L. Perennial, very softly hirsute, lemon-scented. Stems erect 

 or much branched and spreading, 3-6 dm. long : leaf-blades ovate to ovate-oblong, 2-8 cm. 

 long, crenate-serrate, ciliate, rounded or subcordate at base or sometimes acute : flower- 

 clusters leafy-bracted : calyx ringent, 8 mm. long, hairy within and without ; tube flat 

 above, sharply ribbed, the upper lip with upcurved lobes, the lower lip with 2 narrower 

 converging lobes : corolla white or cream-colored, about 1 cm. long, the upper lip inflated,, 

 cleft at the apex, its segments recurved, the lower lip drooping, with a suborbicular middle 

 lobe, bearded especially near the base. 



In waste places and copses, Maine to Ohio and Florida. Summer. LEMON-BALM. 



28. CONRADINA A. Gray. 



Shrubs of low habit, with pubescent foliage. Leaves opposite, approximate or clustered : 

 blades narrow, entire, often revolute. Flowers in loose axillary clusters. Calyx declined 

 at maturity : tube 13-nerved, 2-lipped : upper lip of 3 short lobes : lower lip of 2 longer 

 narrow lobes. Corolla purplish, surpassing the calyx, 2-lipped : upper lip erect, retuse : 

 lower lip spreading, 3-lobed : middle lobe notched. Stamens 4 : anthers 2-celled ; sacs 

 awnless, parallel. Nutlets smooth. 



Foliage canescent : leaves less than 1 cm. long : upper lip of the corolla rounded. 1. C. canescens. 



Foliage puberulent : leaves over 1 cm. long : upper lip of the corolla retuse. 2. C. puberula. 



1. Conradina can6scens (T. & G. ) A. Gray. A much branched shrub, 2-4 dm. tall, 

 the foliage finely canescent : leaves very numerous, often clustered in axils ; blades linear, 

 5-9 mm. long, obtuse, entire, strongly revolute, sessile : clusters 2-6-flowered : pedicels 1-2 

 mm. long : calyx about 5 mm. long, villous, prominently ridged, the upper lip with 3 

 acute or mucronate recurved lobes, the lower lobes lanceolate-subulate, all ciliate : corolla 

 about 1.5 cm. long ; tube nearly as long as the calyx, the upper lip orbicular-ovate, obtuse, 

 the lower lip 3-lobed, its lateral lobes oblong or oblong-obovate, its middle lobe broader 

 than long, truncate at apex : nutlets about 1 mm. long. 



In sand on the west coast of Florida and Alabama. Spring and summer. 



2. Conradina puberula Small. A much branched shrub, 3-7 dm. tall, the foliage 

 cinereous-puberulent : leaves numerous, often clustered in axils ; blades narrowly linear, 

 12-25 rnm. long, obtuse, entire, strongly revolute, sessile : clusters 2-6-flowered, often form- 

 ing a continuous panicle : pedicels commonly 1-2 mm. long : calyx 5-6 mm. long, puberu- 

 lent : tube slightly ribbed, the upper lip with 3 ovate or ovate-lanceolate acute ascending 

 lobes, the lower lip with 2 lanceolate-subulate lobes : corolla 12-15 mm. long ; tube as long 

 as the calyx or nearly so, the upper lip retuse, the lower lip 3-lobed, the lateral lobes 

 rounded, the middle lobe cuneate-flabellate, deeply notched : nutlets 1 mm. long, globose- 

 oval, smooth and glabrous. 



In sand, Florida. Spring and summer. 



