1016 LAMIACEAE 



7-8 mm. long, puberulent without ; tube much longer than the calyx ; limb 5-6 mm. broad, 

 the lobes unequal, the smaller broadly ovate: stamens exserted : fruit 3.5-4 mm. long. 

 In sand or sandy soil. North Carolina to Florida and Texas. Naturalized from the Old World. 



14. AVICBNNIA L. 



Evergreen maritime shrubs or trees, with stout nodose branches. Leaves opposite, 

 without stipules : blades leathery, entire, persistent. Flowers opposite, in spikes or heads : 

 peduncles stoutish, axillary or 3 at the ends of the bractlets. Bracts and bractlets alike, 

 shorter than the calyx. Calyx cup-like, pubescent like the bracts : lobes 5, concave, per- 

 sistent. Corolla campanulate, inserted on an inconspicuous disk : tube short, nearly cylin- 

 dric ; limb 4-lobed, spreading, the posterior lobe often broader than the rest. Stamens 

 4, adnate to the upper part of the corolla-tube : anthers introrse. Ovary 1-celled with a 

 free central placenta. Stigma 2-cleft. Ovules 4, suspended from the central placenta. 

 Capsule oblique, subtended by the persistent calyx, apiculate. 



1. Avicennia nitida Jacq. An evergreen shrub or tree sometimes 25 m. tall, with 

 pubescent young foliage, but soon glabrous. Leaves numerous ; blades leathery, oblong or 

 slightly broadest above or below the middle, 3-8 .cm. long, obtuse or apiculate, slightly 

 revolute, dark green above, pale and minutely canescent beneath, short-petioled : panicles 

 2-5 cm. long, rather few-flowered : calyx somewhat silky ; lobes 3-4 mm. long, acute or 

 acutish : corolla pubescent within and without, 1-1.5 cm. broad ; lobes usually broadest 

 above the middle : fruit oblong or elliptic, 3-5 cm. long, acutish. 



In sandy soil, Florida, Mississippi and Texas. Also in tropical America. BLACK MANGROVE. 



FAMILY 11. PHRYMACEAE Schauer. LOPSEED FAMILY. 



Perennial caulescent herbs, with irregular rootstocks and upright angled 

 stems. Leaves opposite : blades membranous, simple. Inflorescence spicate. 

 Flowers perfect, irregular, subtended by small bracts. Calyx spreading, be- 

 coming reflexed at maturity, 2-lipped : tube cylindric at flowering time ; upper 

 lip with 2 lobes, the lower with 3 much longer lobes. Corolla colored, 2-lipped : 

 tube cylindric : lips unequal, the upper erect, concave, notched, the lower lip 

 larger, spreading, convex, with 3 obtuse lobes. Stamens 4, included, didyna- 

 mous. Gynoecium of 2 united carpels. Ovary 1-celled, oblique. Style slender. 

 Stigmas 2. Ovules solitary orthotropous, ascending. Fruit a narrow achene 

 surrounded by the accrescent deflexed ribbed closed calyx. Embryo with convo- 

 lute cotyledons in the endosperm. 



1. PHRYMA L. 



Characters of the family. LOPSEED. 



2. Phryma leptostachya L. Slender, minutely pubescent, dark green. Stems 3-10 

 dm. tall, simple below, branched above, clothed with reflexed hairs, enlarged and purple 

 above the nodes: leaf-blades ovate or elliptic-ovate to ovate-lanceolate, 3-15 cm. long, 

 acute, acuminate or obtusish, serrate or serrate-crenate, abruptly narrowed into slender 

 petioles ; these nearly equalling the blades on the lower part 'of the stem, very short 

 above : spikes puberulent, 2-20 cm. long : calyx cylindric, 3-5 mm. long, accrescent ; tube 

 fluted ; lobes tooth-like, the 3 upper linear, magenta, hooked at the tip, the 2 lower triangu- 

 lar-ovate : corolla 8 mm. long, white, and usually tinged with magenta ; upper lip ovate, 

 magenta, notched at the apex ; lower lip 3-lobed, the lobes obtuse : fruit 4-5 mm. long, 

 rounded at both ends, enclosed in the hardened calyx-tube, which is terminated by the 

 rigid lobes. 



In woods and thickets, Ontario to Minnesota, Florida and Kansas. Spring and fall. 



FAMILY 12. LAMIACEAE Lindl. MINT FAMILY. 



Aromatic herbs or shrubby plants, or rarely trees, whose vegetative parts 

 abound in a volatile oil and a bitter principle. Stems 4-sided. Leaves opposite 

 or whorled : blades simple, entire, or variously toothed, lobed or cleft. Inflor- 

 escence of axillary often congested or reduced cymes. Flowers perfect, irregular 



