LABIATJE. (MINT FAMILY.) 343 



21. Dracocephalum. Stamens nearly as in the preceding. Calyx straight, the upper 



lip or upper tooth commonly larger. 



22. Cedroiiella. Stamens all ascending. Anther-cells parallel. 



Tribe V. STACHYDE^E. Stamens 4, ascending and parallel; the inferior (outer) 

 pair long-er than the superior, except in No. 33. Anthers usually approximate in pairs. 

 Corolla 2-lipped ; the upper lip concave or arched. Calyx 5 - 10-nerved. 



* Calyx not 2-lipped, thin and membranaceous, inflated -bell-shaped in fruit. 



23. Synaiiclra. Calyx almost equally 4-lobed ! Anther-cells widely divergent. 



24. Physogtegia. Calyx 5-toothed or 5-lobed. Anther-cells parallel. 



* * Calyx 2-lipped, closed in fruit. 



25. Brunella. Calyx nerved and veiny ; upper lip flat, 3-toothed, the lower 2-cleft. 



26. Scutellaria. Calyx with a helmet-like projection on the upper side ; the lip entire. 



* * * Calyx not 2-lipped, nor the tube inflated, 5 - 10-toothed. 

 *- Stamens included in the tube of the corolla. 



27. Marrutoium. Calyx tubular, 5 - 10-nerved, and with 6 or 10 awl-shaped teeth. 



- -t- Stamens projecting beyond the tube of the corolla. 

 H- Anthers opening transversely by two unequal valves ; the smaller valve ciliate. 



28. Galeopsis. Calyx tubular-bell-shaped; the 5 teeth spiny -pointed. 



H- -H- Anthers opening lengthwise. 



29. Stachys. Calyx tubular-bell-shaped. Nutlets rounded at the top. Stamens after 



shedding the pollen often turned downward. 



30. Leon urns. Calyx top-shaped, the rigid and spiny-pointed teeth soon spreading. Nut- 



lets truncate and acutely 3-angled at the top. 



31. Lamium. Calyx-teeth not spiny-pointed. Nutlets sharply 3-angled, truncate at the top. 



32. Ball ota. Calyx somewhat funnel-form, the 5-10 teeth united at the base into a spread- 



ing border. Nutlets roundish at the top. Upper lip of the corolla erect. 



33. Phlomis. Calyx tubular, the 5 teeth abruptly awned. Upper lip of the corolla arched. 



1. TEUCRIUM, L. GERMANDER. 



Calyx 5-toothed. Corolla with the 4 upper lobes nearly equal, oblong, turned 

 forward, so that there seems to be no upper lip ; the lower one much larger. 

 Stamens 4, exserted from the deep cleft between the 2 upper lobes of the corolla : 

 anther-cells confluent.' (Named for Teucer, king of Troy.) 



1. T. Canad&ise, L. (AMERICAN GERMANDER. WOOD SAGE.) Her- 

 baceous perennial, downy ; stem erect (l-3 high); leaves ovate-lanceolate, 

 serrate, rounded at the base, short-petioled, hoary underneath; the floral scarcely" 

 longer than the oblique unequally-toothed calyx ; whorls about 6-flowered, 

 crowded in a long and simple wand-like spike. Low grounds : not rare. 

 July - Sept. Corolla pale purple, rarely white. 



2. TRICHOSTEMA, L. BLUE CURLS. 



Calyx bell-shaped, oblique, deeply 5-cleft ; the 3 upper teeth elongated and 

 partly united, the 2 lower very short. Corolla 5-lobed ; the lobes narrowly ob- 

 long, declined, nearly equal in length ; the 3 lower more or less united. Sta- 

 mens 4, with very long capillary filaments, exserted much beyond the corolla, 

 curved : anther-cells divergent and at length confluent. Low annuals, some- 

 what clammy-glandular and balsamic, branched, with entire leaves, and mostly 

 solitary 1 -flowered pedicels terminating the branches, becoming lateral by the 

 production of axillary branchlets, and the flower appearing to be reversed, 



