98 Spri)ig Flora of Ohio. 



2. Genus A-POC'-Y-NUIVI. — Calyx very small; corolla canipanulate, 

 the lobes short; follicles long, sub-linear; herbs with opposite, entire, 

 mucronate leaves. 



A-poc'-y-num an-dro-sae-mi-fo'-li-um L. Spreading Dogbane.— Branches 



divergently forking; leaves ovate, distinctly petioled; cymes loose, 

 spreading; corolla with revolute lobes, the tube much longer than the 

 calyx-lobes. Flowering in June. 



A-poc'-y-num can-nab'-i-num L. Indian Hemp. — Stem and branches 

 upright or ascending, terminated by erect and close, many-flowered 

 cymes ; leaves oval or oblong and even lanceolate, short petioled or 

 sessile ; corolla with nearly erect lobes, the tube not longer than the 

 calyx-lobes. Flowering later. _ ■/ ' f JL ..„^ji^J^'^ iJ 



^^XxSlL^^C^derfPOL^-MO-NI-A'-CE-yE. PHLOX FAMILY. -^Flowers 



perfect, regular; ovary 3-celled; calyx persistent; plants herbaceous. 



Corolla salver-forni : leaves opposite and entire P/i/o.r. 1 



Corolla open bell-shaped; leaves alternate, pinnate I'ltlriiKDiiitin. 2 



1. Genus PHLOX. — Calyx narrow; corolla salver-form with a long 

 tube; leaves opposite, sessile, entire, flowers cyniose. Many of the 

 species are cultivated. Those blooming in the Spring are the follow- 

 ing: 



Phlox pi-lo'-sa L,. Hairy Phlox. — Stems slender, 1-1 '2 ft. high, 

 usually hairy, as are also the lanceolate or linear, 1-4 in. long, leaves ; 

 calyx-teeth slender awl-shaped and awn-like; lobes of the pink-pur- 

 ple or rose-red (rarely white) corolla obovate, entire. 



Phlox di-var-i-ca'-ta L. Wild Phlox.— Stems spreading or ascending 

 from a decumbent base, 0-1 S in. high; leaves oblong-.ovate or lanceo- 

 late, or the lower oblong-lanceolate, ly^ in. long; calyx-teeth slender, 

 awl-shaped; lobes of the pale lilac or bluish corolla obcordate or 

 wedge-obovate and notched at the end, or often entire. 



Phlox sub-u-la'-ta L,. Ground or Moss Pink. — Depressed in broad 

 mats, evergreen ; leaves awl-shaped, lanceolate or narrowly linear, 

 %-y2 in. long; corolla pink-purple or rose-color with a darker center 

 (sometimes white), lobes notched, rarely entire. 



2. Genus POL-E-MO'-NI-UM. — Calyx l)ell-shaped ; corolla open 

 bell-shaped or funnel-form; leaves alternate, pinnate, the upper 

 leaflets -sometimes confluent. 



