POLKMOXIACF.iE. (POLICMOXIUM rAMILY.) 337 



Diffuse, hairy Iicrlis, witli alternate, cntira leaves, and axillary and terminal sin- 

 gle, clustered, or e_\ uio.^v; i)urj)le or white flowers. 



1. N. Jamaicensis, T^. I'uhcsccnt; stems prostrate, diiruscly hranchcd, 

 aogled or sliichtly winged l»y the deeurrent leaves; leaves spa'.ulate-olwvatc, 

 obtuse, taperin;^ ino a petiole ; flowers solitary or 2-3 to;;ciher, sliort-i)cdun- 

 cled; calyx-lobes linear, filiate, as long :vs the corolla; capsule ob'.oni;, splitting 

 loculieidally into 2 valves, and at length scptieidally into 4 valves, having the 2 

 placentae free. —South Florida. — Stem 12'- 18' long. Leaves i'-l' long. 

 Corolla small, purj)le, ciliatc. Capsule 4-angled, smuoLu. 



Order 98. POLE3IONIACEiT:. (Polemoxil^i Family.) 



Chiefly herbs, with opposite or alternate lenvcn, and regular solitary or 

 cymose flowers. — Calyx 5-clefl or 5-partcel, with mcmbranaccous-mar- 

 gined lobes, imbricated in the bud. Corolla 5-Iobcd, convolute or (:n No. 

 4) imbricated in the bud. Stamens 5, inserted on the tube of the corolla. 

 Ovary 3-celled, with 3 - many amphitropous ovules attached to the cen- 

 tral placenta. Style 3-cleft. Capsule 3-cellcd, locullcidally 3-valved. 

 Seeds angular. Embryo straight in the axis of copious albumen. Cotyle- 

 dons leaf}', lladlclc inferior. 



S^ynopsis. 



Tribe I. POLiEMOXIE.ffi. — Lobes of the corolla convolute ia t'.io buJ. Anther-cells 

 parallel, openins lengthwise. 



1. Pnr.OX. Corolla fa'ver-form. Filaments unequally in -erf c J on the tube. Leaves entire. 



2. GILL\. Corolla tubular-funnel-shapuJ. Tilamcuts equally iasortuj near the throat of the 



corolla. leaves piiinately JiviJeJ. 



3. POLEMOXIUM. Corolla short-bell-shaped. Filaments inserted oa the throat of the co- 



rolla. Leaves pinnate. 

 TaiBE II. DIAPEXSIE.^. — Lobes of the corolla imbricated in the bud. Anther-cells 

 opening transversely. 



4. PYXIDANTIIEUA. Anther-cells awned at the base. Leaves entire. Flowers solitary. 



1. PHLOX, L. 



Calyx cylindrical or bell-shaped, 5-cleft. Corolla salvcr-form, with a long and 

 slender tube, and obovate or roundish lobes. Stamens 5, included, unequally 

 inserted on the tube. Style filiform. Ovules solitary in the cells. Capsule 

 ovoid, 1 -3-secded ; the valves at length separating from tlic central ])laecnta. 

 Seeds erect. — Mostly perennial herbs, with opposite or (the upper) alternate 

 entire leaves, and showy purple or white flowers in terminal panicled cymes. 



§ 1 . Slons herbaceous, erect or ascending. 



* Style long, filiform : cali/.r-tef.th lanrfolate-suhiilate, not aicn-pointcd {except in No. 



1 ) ' lohes of the corolla entire. 



1. P. paniculata, L. Smooth; stem tall, branched above ;. haves ovate- 

 lanceolate, acute or acuminate, the upper ones of;cn cordate; cymes numerous, 



2y 



