306 LABIATAE. 



Verbena hastata L. Perennial, erect, 30-90 cm. high, simple below the 

 inflorescence, rough-puberulent throughout; stems 4-sided; leaves oblong or 

 broadly lanceolate, acute or acuminate, coarsely serrate, 6-12 cm. long, short- 

 petioled; spikes numerous, clustered at the summit of the stem, slender, 5-15 

 cm. long; bracts shorter than the calyx; corolla blue, 3 mm. broad. 



In moist open places; Victoria, Macoun; common in the Willamette Valley, 

 Oregon. 



Verbena bracteosa Michx. Branches prostrate or spreading, 15-30 cm. 

 long, rough-hairy throughout, the root often becoming woody; leaves oblong 

 or obovate, cuneate at base, pinnately 3-cleft, coarsely dentate, 1-3 cm. long; 

 petiole short, margined; spikes terminal, 1-10 cm. long; upper bracts entire, 

 lanceolate, acuminate, becoming rigid; the lower somewhat cleft, all exceeding 

 the flowers; corolla blue, 4 mm. long; anthers without appendages. 



Banks of the Columbia River (Menzies Island, Douglas); rare in our limits, 

 common in the intsrior. 



Family 88. LABIATAE. Mint Family. 

 Mostly aromatic herbs with 4-sided stems; leaves simple, 

 opposite; corolla more or less 2-lipped, the upper lip 2-lobed or 

 sometimes entire, the lower 3-lobed; stamens on the corolla- tube, 

 didynamous or diandrous; style usually 2-lobed at the apex; 

 ovary deeply 4-lobed or parted; fruit of 4 seed-like nutlets or 

 akenes, each with one erect seed ; endosperm mostly none. 



Ovary 4-lobed; corolla nearly regular, 5-cleft. 424. Trichostema, 307. 



Ovary 4-parted; corolla nearly regular, 4-cleft, 

 or distinctly bilabiate. 

 Corolla nearly regular, or when bilabiate, 

 the upper lip plane. 

 Corolla regular or nearly so. 



Antheriferous stamens 2. 425. Lycopus, 307. 



Antheriferous stamens 4. 426. Mentha, 308. 



Corolla bilabiate. 



Plant creeping; flowers axillary. 427. Micromeria, 309. 



Plant erect; flowers capitate-verti- 

 cillate. _ 428. Madronella, 309. 



Corolla distinctly bilabiate, the upper lip 

 concave. 

 Calyx with a protuberance on the upper 



side. 429. Scutellaria, 309. 



Calyx without a protuberance. 



Upper pair of stamens longer than 

 the lower. 

 Calyx teeth unequal, the upper 



very large. 430. Dracocephalum, 310. 



Calyx teeth subequal. 



Flowers in rather dense and 

 many-flowered cymose clus- 

 ters forming interrupted 

 spikes or racemes; upper 

 floral leaves small and bract- 

 like. 431. Nepeta, 310. 

 Flowers in loose few-flowered 



