310 LABIATE. (mint FAMILY.) 



ovate, coriaceous, indehiscent. Embryo large, naked, germinating within the 

 capsule. — Low evergreen trees, with extensively creeping roots, forming impen- 

 etrable thickets on the muddy shores of the sea. Leaves opposite, entire, smooth 

 above, hoary and velvety beneath. Flowers in dense heads, on axillary and 

 terminal peduncles. 



1- A. oblongifolia, Nutt. 1 Tomentose throughout, except the upper 

 surface of the rigid oblong obtuse short-petioled leaves ; peduncles tiiree together, 

 terminal, shorter than the leaves ; heads oval ; sepals and bracts orbicular ; co- 

 rolla tomentose on both sides ; style exserted. — Key West. Oct. — Branches 

 terete. Leaves 2' -3' long. Peduncles 4-angled. Heads ^' long. Corolla 

 3" long. 



2. A. tomentosa, Jacq. Leaves obovate-elliptical, very obtuse, tapering 

 into a petiole, smooth above, wliite-tomentose beneath ; spikes short, the lower 

 flowers mostly scattered ; corolla-lobes truncate, silky below, smooth above ; 

 stigma nearly sessile. — South Florida. NuttaU. — Leaves 3' long. Corolla 

 white. 



10. PHRYMA, L. LopsEED. 



Calyx tubular, bilabiate ; the upper lip of 3 bristle-pointed teeth ; the lower 

 shorter, 2-cleft. Corolla bilabiate; the upper lip notched, the lower longer, 3- 

 lobed. Stamens 4, didynajpous, included. Style slender : stigma 2-cleft. Fruit 

 oblong, pointed by the persistent style. — A perennial branching pubescent 

 herb, with opposite ovate or oblong coarsely-serrate long-petiolcd leaves, and 

 small opposite purplish flowers in a slender terminal spike. Fruit reflexed. 



1 . P. leptostachya, L. — Rich shaded soil, Florida to Mississippi, and 

 northward. July and Aug. — Stem l°-3° high, tumid above the joints. 

 Leaves 3' -5' long. 



Order 94. LABIATE. (Mint Family.) 



Herbs or shrubs, with opposite 4-angled branches, and opposite exstip- 

 ulate leaves. Flowers opposite, solitary, or oftener in close axillary spiked 

 or capitate cymes (whorls). Calyx 3 - 10-cleft or toothed. Corolla more 

 or less bilabiate, 4 - 5-lobed. Stamens Inserted on the tube of the corolla, 

 diandrous or didynamous. Ovary 4-cleft or 4-parted, the lobes surround- 

 ing the base of the single style. Ovule solitary, erect, anatropous. Fruit 

 of 1 - 4 one-seeded nutlets. Albumen scarce or none. Embryo straight 

 or (in Scutellaria) curved. Radicle short, inferior. — Plants commonly 

 dotted with minute glands, which are filled with au aromatic volatile oil. 



Synopsis. 



Tribe I. OCOIOIDE}.^. — Stamens 4, didynamous ; the lower pair longer, reclining on 

 the lower lobe of the corolla; Anthers 2-celled. Nutlets smooth, distinct. 



1. OCIMUM. Upper lobe of the calyx broad, decurrent Lobes of the corolla nearly equal. 



2. HYPTIS. Calyx-teeth nearly equal. Lowest lobe of the corolla longest, saccate, bent 



downward. 



