Order 92.— POLEMONIACEiE. 56Y 



centse axial, borne on each surface of the free, false dissepiment, seeds 

 many. — Herbs with alternate, undivided Ivs., and axillary or terminal 

 cymes of blue fls. ' 



1 H. corymbdsa Maobride. Vharmed, sparingly hirsute above; Ivs. sessile, 

 lance-ovate ; 'bi'anchleis coryrfibed, each bearing a terminal flower ; sep. lanceolate, 

 acute, hispid; cor. thrice longer than the calyx; caps, roundiah-ovoid, glabrous. 



— y Ponds in pine barrens, Ga. and S. Car. (Bachman). Sts. 1 to2f high. Lva, 

 1' to 18" long, with downy veins and margins. Pis. showy, nearly bell-shaped, 

 1' broad, " azure with yellowish veins and 5 white sp9ts near tho base," (EUiotr.) 

 Jn. — Aug. 



2 H. quadrivalva "Walt. Spiny, more or less hispid ; Ivs. lanceolate, petiolate, 

 very acute at both ends, entire ; cymes 4 io 6-ftowered, axillary, upper sessile, 

 lower pedunculate ; sepals ovate, acuminate, a little shorter than the corolla. — ![ 

 In stagnant waters, S. Car., Ga. to La. St. 2f high. Spines straight, slender, 

 axillary, 3 to 5" long. Lvs. 2. to 3' long. Cor. azure blue, 5 to 6" broad. 

 Caps, as large as a pea, with numerous minute seeds. Jl. — Sept. 



3 H. ovata Nutt. With ovate-acuminate lvs. and terminal clusters is found in W. 

 La. and Ark, probably not native within our Ihnits. Earely seen in gardens. 



Order XCII. POLEMONIACE.^. Phloxworts: 



Serhs with alternate or opposite leaves and 5-parted, regular, showy flowers. 

 Corolla monopetalous, the lobes convolute, rarely imbricate in sestivation. Sta- 

 mens 6, adherent to the corolla tube, and alternate with its lobes. Ovary 3-celled, 

 stigma 3-cleft ; capsule 3-celled, 3-valved, loculicidal. Seeds few or many, albumin- 

 ous, attached to a permanent columella. (Illustr. in Fig. 301.) 



Genera IT, epecies 104, chiefly N. American. They are valued and cultivated only oa orna- 

 mental plants. 



TRIBES AND GENERA. 

 I. POLEMONIE.^. Sepals united at base. Lobes of tho corolla convolute in bud. (a) 



a Corolla salver-forra. Filaments unequal. Leaves entire Phlox. 1 



a Corolla bcli-form. Filaments equal. Leaves pinnate Polemonium. 2 



a Corolla funnel-form. Filaments equal. (Leaves pinnately dissected) Gilia. 3 



II. DIAPENSIEjE. Sepals distinct, oval. Lobes of corolla imbricated Diapessia. 4 



I. PHLOX, L." Phlox. Lychnidia. (Gr. (^Aof, a flower ; from 

 the color and profusion of the flowers.) Calyx prismatic, deeply 5-cleft ; 

 corolla salver-form, the tube more or less curved ; stamens very un- 

 equally inserted in the tube of the corolla above the middle ; capsule 

 3-celled, cells each 1-seeded. — A highly ornamental. North American 

 genus. Lvs. mostly opposite, sessile, simple, entire. Fls. in terminal, 

 cymes, corymbod or panicled. (Fig. 301.) 



* Lobes of the corolla rounded and entire at the end. (1) 



1 Panicle of cymes oblong or pyramidal, many-flowered Nos. 1, 2 



1 Potfiicle of cymes corymbed, level-topped, flowers fewer. (2) 



2 Plants glabrous. Calyx teeth shorter than its tubes Nos. S, 4 



2 Plants llairy. Calyx teeth attenuated, longer than the tube. (3) 



3 Leaves narrow, linear or nearly so Nos. 5, 6 



3 Leaves broad, ovate or lanceolate, etc '..Nos. 7, 8, p., 9 



* Lobes of corolla notched or bifld at the ond.— Loaves distant Nos. 8, 10 



, — Leaves imbricated No. 11 



1 P. panioulita L. Glabrous, erect ; las. oblong or ovate-lancaolate, acuminate 

 at each end, or tho upper abrupt at base, rough-edged, flat; corymbs paniculate, 

 subpyraraidal, many -flowered ; cal,. teeth setaceous-acuminate, nearly as long as the 

 tube ; pet. roundish-obovate, entire. — If This favorite is found native in woods 

 and river banks, W. States to Penn. and Car. St. 2 to 3f high, ending in a large, 

 " oblong-pyramidal panicle of innumerable pink-colored, scentless flowers. Lva. 3 

 to. 5' by 9 to 16", lower ones distinctly petioled. Cor. tube a little curved, 12 to 

 15" long. JL — Sept. f 



