ORDER XC. SCROPHULARIACEiE. 453 



sule ovate, 1-celled. Seed numerous, with a gland beneath the 

 base of the germ. 



1. O. America xa, (L.) Stem simple, thick, covered with ovate-lanceo- 

 late scales. Flowers in spikes, terminal. Corolla recurved. Stamens 

 exserted. — Brownish-yellow. 21. July — Aug. Rich soils. 6 — 8 

 inches. Conopholis Americana, "VValL Cancer-root. 



2. O. uniflo'ka, (L.) Stems erect, short, numerous from each root, 

 covered with smooth, concave scales. Scape 1-flowered, 4 — 6 inches 

 long, pubescent. Corolla with oblong, oval lobes, with a pubescent 

 margia — Bluish white. 2£. May — July. Pine-barrens. 



Anoplanihus uniflorus, En. 



Genus II— EPIPHE'GUS. Nut*. 12—2. 

 (From epi, upon, and pfiegas, the Beech.) 



Calyx short, 5-toothed. Flowers polygamous, the upper 

 ones sterile, the lower fertile. Corolla of the sterile florets rin- 

 gent, compressed, 4-cleft ; of the fertile 4-toothed, small. Cap- 

 sule truncate, oblique, 1-celled. 



1. E. Virginia Nus, (Bart.) Stem erect, branching, covered with 

 small ovate scales. Flowers alternate, small ; sterile flowers largest, 

 striped with purple, growing on the roots of beech-trees. — "White, with 

 purple. 2£. Aug. — Sept. 12 — 18 inches. 



Order XC— SCROPHULARIA'CE^E. (Figwort Family) 



Calyx divided, unequal, persistent. Corolla bilabiate, hy- 

 pogynous. Stamens usually 4, didynamous, sometimes only 2. 

 Ovary 2-celled. Style 1. Stigma 2-lobed. Fruit generally 

 a 2-celled capsule. Placenta? central. Seed usually numerous, 

 small. Herbaceous plants, with the leaves generally opposite. 



ANALYSIS. 



1. Stamens 4 2 



Stamens 2 or 5 19 



2. Stamens didynamous 3 



Stamens not didynamous 17 



3. Divisions of the calyx 2 4 



Dirfciona of the calyx mere than 2 5 



4. Leaves entire Euchroma or Castilleja, 18 



Leaves not entire Pedicular is, 20 



5. Divisions of the calyx 4 6 



Divisions of the calyx 5 7 



6. Seeds 1 — I MeHampyrum, 21 



many Sclncalbea, 19 



7. The two longest stamens steriie Lindernia, 9 



Four stamens fertile 8 



8. Flowers with a sterile filament 9 



Flowers with no sterile filament 10 



9. Flowers dull, greenish-purple Scroph ulnria, 3 



Flowers white" Ckelone, 4 



n bright parpU Penstemon, 5 



-rolla bilabiate 11 



nearly regular 13 



11. Flowers gibbous at the base Linaria or Antirrhinum, 2 



Flowers not gibbous at the base 12 



