440 ORDER LXXXIV. POLEMONIACE.E. 



Order LXXXIV.— POLEMONIA'CE^E. (Phlox Family.) 



Calyx 5-parted, persistent, sometimes irregular. Corolla 

 regular, 5-lobed. Stamens 5, inserted into the middle of the 

 tube of the corolla, and alternate with its segments. Ovary 

 superior, 3-celled. Style simple. Stigma trifid. Capsule 3- 

 celled, dehiscence loculicidal. Seed angular or oval, ascending ; 

 embryo straight ; cotyledons foliaceous. Herbaceous plants. 



Genus I.— PHLOX. L. 5—1. 

 (From phlox, a flame, the appearance of the flowers.) 



Calyx prismatic, deeply 5-cleft. Corolla salver-form, with a 

 flat 5-lobed border, lobes cuneate. Stamens unequal, inserted 

 into the tube of the corolla. Capsule ovate, 3-celled, 1 seed in 

 each cell. 



1. P. acumina'ta, (Pursh.) Stem erect, little scabrous toward the 

 summit, smooth toward the base. Leaves membranaceous, scabrous, 

 lower ones spatulate-ovate, acuminate, upper ones lanceolate. Flow- 

 ers in terminal corymbs ; segments of the calyx subulate, awned ; seg- 

 ments of the corolla rounded. — Purple. If. Aug. — Sept. Common 

 in the upper country. 3 — 5 feet. 



2. P. panicula'ta, (L.) Stem smooth, erect. Leaves opposite, lance- 

 olate, flat, with scabrous margins, acuminate. Flowers in numerous op- 

 posite corymbs; segments of the calyx pubescent, awned. Anthirs 

 linear, 2-celled. Stigma hispid. — Purple. 2£. June — July. Upper dis- 

 tricts of Carolina. 2 feet. 



3. P. undlla'ta, (Pursh.) Stem erect, glabrous. Leaves oblong-lance- 

 olate, undulate, with scabrous margins. Flotoers in paniculate corymbs ; 

 segments of the calyx awned, those of the corolla retuse. — Blue. If. 

 July — Aug. Mountains. 2 — 3 feet. 



4. P. pyramida'lis, (Pursh.) Stem erect, scabrous. Leaves cordate- 

 ovate, acute. Flowers in pyramidal, fastigiate panicles ; segments of the 

 calyx lanceolate, acute ; those of the corolla cuneate, truncate. — Purple. 

 If. June — Aug. Mountains. 



5. P. corda'ta, (Ell.) Stem erect, glabrous. Leaves cordate, taper- 

 ing toward the lumnut, auricled at the base, with scabrous margins. 

 Flowers in somewhat paniculate corymbs, numerous; segments of the 

 calyx awned, as long as the tube. — Blue; H. August. Upper dis- 

 tricts of Carolina. 1 — 2 feet. 



ii. P. m.uti.a ta, (L.) Stern erect, terete, dotted, sprinkled with 

 glandular haira. Leans sessile, ovate-lanceolate, acute, with scabrous 

 margins. Flower* in nlternate corymbs. Calyx with subulate segments, 

 angled. Corolla with obovate rounded segments. — Purple. If. May 

 — July. Kieh soils. Common. 2 — 3 feet. 



7. P. Carolina, (Pursh.) Stem erect, pubescent. Leaves ovate- 

 lanceolate, acute, glabrous. Flower* in fastigiate corymbs. Calyx 

 glabrous, with linear-lanceolate teeth ; segments of the corolla rounded. 

 — Purple. If. July — Sept. Upper districts of Carolina. 



