8l8 FLORA. 



the limb less abruptly spreading, the lobes subacute. In waste places, escaped 

 from gardens, N. Y. and Penn. Native of southern Brazil and Paraguay. 

 June-Sept. 



Petunia parviflbra Juss., a prostrate pubescent annual, with small linear to spatulate 

 leaves, and a funnelform corolla 8-10 mm. long, is abundant on ballast about the eastern 

 seaports. 



Family 9. SCROPHULARIACEAE Lindl. 

 Figwort Family. 



Herbs, shrubs or trees, with estipulate leaves, and perfect mostly 

 complete and irregular flowers (corolla wanting in one species of Syn- 

 thyris). Calyx inferior, persistent, 4~5-toothed, -cleft, or -divided, or 

 sometimes split on the lower side, or on both sides, the lobes or seg- 

 ments valvate, imbricate or distinct in the bud. Corolla gamopetalous, 

 the limb 2-lipped, or nearly regular. Stamens 2, 4 or 5, didynamous, or 

 nearly equal, inserted on the corolla and alternate with its lobes ; 

 anthers 2-celled; the sacs equal, or unequal, or sometimes confluent into 

 one. Disk present or obsolete. Pistil i, entire or 2-lobed ; ovary su- 

 perior, 2-celled, or rarely i-celled; ovules anatropous or amphitropous, 

 on axile placentae ; style slender, simple ; stigma entire, 2-lobed or 2- 

 lamellate. Fruit mostly capsular and septicidally or loculicidally de- 

 hiscent. Seeds mostly numerous ; endosperm fleshy ; embryo small, 

 straight or slightly curved ; cotyledons little broader than the radicle. 

 About 165 genera and 2500 species, widely distributed. 



1. Anther-bearing: stamens 5 ; corolla rotate ; leaves alternate. i. Verbascum. 



2. Anther-bearing- stamens 2 or 4 ; leaves opposite, verticillate or alternate. 



* Corolla spurred, saccate or gibbous on the lower side at the base. 

 Corolla spurred at the base. 



Leaves palmately 3~5-veined. 2. Cymbalaria. 



Leaves pinnately veined. 



Flowers solitary in the axils.- 3. Kickxia. 



Flowers in terminal racemes. . 4. Linaria. 



Corolla saccate or gibbous at the base. 5. Antirrhinum. 



* * Corolla neither spurred, saccate nor gibbous on the lower side. 



t Anther-bearing stamens 4, the fifth sterile or rudimentary. 



Sterile stamen a scale adnate to the upper side of the corolla. 6. Scrophularia. 



Sterile stamen elongated, longer or shorter than the others. 

 Corolla tubular, 2-lipped, the lobes of the lower lip flat. 



Sterile stamen shorter than the others; seeds winged. 7. Chelone. 



Sterile stamen about equalling the others; seeds wingless. 8. Pentstemon. 

 Corolla 2-cleft, declined; middle lobe of the lower lip conduplicate. 



9. Collinsia. 



1 1 Stamens 4, all anther-bearing, or 2 sterile, or 2 only. 

 a. Stamens 4, all anther-bearing; large Asiatic tree. 



10. Paulownia. 

 b. Stamens 4, all anther-bearing; herbs; corolla 2-lipped; stamens not enclosed in upper 



lip of corolla. 



Calyx prismatic, 5-angled, s-toothed. n. Mimulus. 



Calyx 5-parted, not prismatic. 



Calyx-segments equal; leaves pinnatifid in our species. 12. Conobea. 



Calyx-segments unequal, the upper one the largest. 13. Monniera. 



c. Stamens 4, 2 anther-bearing and 2 sterile, or 2 only; corolla obviously 2-lipped. 

 Calyx 5-parted ; upper lip of corolla present. 



Sterile filaments short or none. 14. Gratiola. 



Sterile filaments slender, 2-lobed. 15. Ilysanthes. 



Calyx 4-toothed; upper lip of corolla obsolete; low mud plant. 16. Micranthemum. 



d. Stamens 4, all anther-bearing; corolla nearly regular; flowers on scapes. 



17. Limosella. 



