\:ervain family 741 



keeled. Corolla 2-Iipped; tube curved; limb 4-lobed, oblique. Stamens 4, 

 did^Tnous; connective of the anthers not appendaged. Ovary 2-celled; stigma 

 oblique; o\ailes solitary in each cell. Fruit tardily separating into t\^'o nutlets. 

 [Lippia in part.] 



Leaves from linear-oblanceolate to cuneate. 2-8-toothed above; peduncles slightly if any 



exceeding the leaves. 1. P- cuncifolia. 



Leaves lanceolate, oblong, or oval, sharply serrate; peduncles much exceeding the loaves. 



2. P. lanceolata, 



1. P. cuneifolia (Torr.) Greene. Stems branched at the base, procumbent 

 •or creeping, 2-10 dm. long; leaves opposite and more or less fascicled in the 



axils; blades 1-3 cm. long; midvein prominent, the lateral ones obsolete; corolla 

 purplish or whitish, 4 mm. long. Lippia cuneifolia (Torr.) Steud. Plains and 

 prairies: S.D.— Tex.— Ariz.— Wyo. Plain— SubmonL Je-Au. 



2. P. lanceolata (Michx.) Greene. Stem branched from the base, pro- 

 cumbent, 1-4 dm. long; leaves opposite, rarely fasciculate; blades eUiptic-lance- 

 olate, 1.5-5 cm. long, acute, \vnth about 4 pairs of lateral veins; corolla pale blue, 

 2-2.5 ram. long. Valleys: Out.— Fla.— Tex.— Neb. Plain— Son. Je-0. 



Family 115. LAMIACEAE. :Mixt Family. 



Aromatic herbs or shrubs, with 4-angled stems. Leaves opposite or 

 whorled, simple, usually toothed or lobed, glandular-punctate. Flowers 

 perfect, irregular, zygomorphic, or nearly regular, pseudo-verticillate, i. e., 

 in congested axillary reduced cymes. Calyx of 5 united sepals, sometimes 

 regular, sometimes irregular, and then usually 2-lipped. Corolla bilabiate, 

 or nearly regular. Stamens 4, didynamous, or one of the pairs abortive; 

 anthers 2-celled. Gynoecium of united carpels; ovary 4-lobed and 4-celled; 

 st3des united, arising between the lobes; stigma terminal; ovules sohtarj' m 

 each cell. Fruit of 4 nutlets, included in the persistent calyx. Endosperm 

 fleshy or wanting. 



Ovary of 4 united nutlets; style not basal; nutlets laterally attached. 



Corolla strongly bilateral, the upper Up very small, the lower large ^ ^^^„^^ 



Flowers in smaU congested cymes, axillary to smaU bracts and fornung a raceme- 

 like panicle; calyx-lobes shorter than the tube; leaves toothed^^^^^^^^ 



Flowers soUtary in the axils of bracts similar to the leaves ; cab;x-lob^ l6nger 

 than the tube; leaves laciniate. ^ ,. , . ^. Aii-LU.'^MaN. 



Corolla almost regularly 5-iobed. but lobes declmed; stamens l^'J,^;^^^^^!;^^,^"^ 



Ovary of 4 distinct or nearly distinct nutlets; styles basal; nutlets basaUy attached. 



Corolla bilabiate. . . » 



Calyx 2-hpped; both lips entu-e; stamens 4. 



Calyx not inflated, the upper hp with a crest on the upper ^i^^^^^^^^^^^ 



Calyx inflated* without a crest. ^ 5. Salazaria 



Cal>^ either 2-Upped and at least one of the Ups toothed, or ^^^f ^^ 4-^-toothed. 

 Stamens included in the corolla-tube. o. JMarhxtbii m. 



Stamens exsert^ from the tube. 

 Upper Up of the coroUa concave. 

 Anther-bearing stamens 4. 



Upper stamens longer than the lower. 



Calvx 5-toothed. , x j- *- 



Anther-sacs parallel or nearly so; stamens divergent. 



7. AGASTACHE. 



Anther-sacs divaricate; anther approximate in pau^. 



Flowers in terminal spikes; floral leaves reduced; plant 



erect 8. Nepeta. 



Flowers in axillary verticils; floral leaves like the rest; 

 plant spreading. ^' Gleco\l\. 



Calj-x distinctly 2-Upped. 10. Molda\ica. 



Upper stamens shorter than the lower. ■dx.t^-x-t t * 



Calyx distinctly 2-Upped, closed m fruit. 11. Prunella. 

 Calyx 5-toothed, not 2-lipped, open m fruit. 



Salyx membranous, inflated m fruit, f--tly^n^r.^^^^^^ 



Calyx not membranous, not inflated in friiit. strongly 5-10- 



nerv^. 



