82 SPRING FLORA 



1. VERBENA. Vervain. 



Inflorescence spicate or capitate. Calyx' tubular, 5-angled 

 and more or less unequally 5-toothed. Corolla tubular, salver- 

 shaped. Stamens 4, included; the upper 2 often without an- 

 thers. Ovary not lobed; splitting 1 when ripe into 4 nutlets. 



1. V. bracteosa Michx. Decumbent; coarsely hairy; at length 

 radiately much-branched from the base. Leaves wedge-lance- 

 olate, cut-pinnatifid or 3-cleft; short-petioled. Spike dense, 

 with leafy bracts. Flowers small; blue or purple; shorter than 

 bracts. Dry ground. June-September. 



LABIATE. Mint Family. 



Herbs, mostly aromatic, with square stems and op- 

 posite exstipulate leaves. Flowers complete. Calyx 

 4-5-toothed; 2-lipped or regular. Corolla 2-lipped or 

 regular. Stamens didynamous or rarely 2 with or with- 

 out staminodia ; borne on corolla-tube and alternate 

 with its lobes. Style 2-lobed. Ovary "superior," 4- 

 lobed or 4-parted, ripening into 4 one-seeded nutlets. 



Style and stamens exserted. 



Upper pair of stamens the longer. 



Leaves with crenate-dentate margins and heart- 

 shaped bases 1. Nepeta 



Leaves with sharply-serrate margins and acute 



bases 2. Dracoeephalum 



Upper pair of stamens the shorter. 



Calyx 2-lipped 3. Prunella 



Calyx regular or nearly so 4. Lamiuiu 



Style and stamens included 5. Marrubium 



1. NEPETA. Catnip. 



Strong-smelling herbs with the flowers whorled, the whorls 

 forming interrupted terminal spikes. Corolla-tube dilated 

 above, the limb distinctly 2-lipped. 



1. N. Cataria L. An erect branched perennial, 1-3 ft. high. 

 Corolla bluish or whitish, spotted with lavender. Calyx-teeth 

 subulate, all about of the same length. In waste places. June- 

 October. Introduced. 



2. DRACOCEPHALTJM. Dragon -head. 



Herbs, with inflorescence spiked or capitate in many- 

 flowered leafy-bracted whorls. Calyx tubular; unequally 5- 

 tpothed (the upper teeth very large), and 13-15-nerved. Upper 

 lip of corolla notched and concave; lower lip 3-cleft, with 

 middle division largest and notched at end. Stamens 4; anther- 

 cells divergent. Ovary deeply 4-parted. 



l.D. parviflorum Nutt. Rather stout and coarse; pubescent; 

 stem erect, biennial, 6-20 inches high. Leaves petioled; lance- 

 olate or elliptical; incisely dentate or pinnatifid. Bracts awn- 

 toothed. Corolla bluish or pinkish; slender, but little longer 

 than calyx, May-August, 



