110. ACANTHACEAE 205 



1 . Paulownia Sicb. & Zucc. — Princess Tree 

 P. tonnntosa (riiunb.) Steud. Cultivated; natix-e of China; some- 

 times spontaneous in s. 111. [P. imperialis Sieb. & Zucc.]. Apr. -May. 



2. Catalpa Scop. 



1. Flowers in many-flowered crowded ])anicles 20-23 cm long; calyx 

 glabrous; corolla 3-4 cm in diameter, thickly spotted on the 

 inner surface, the lower lobe entire or nearly so; capsules thin- 

 walled, 5-8 mm in diameter; leaves short-acuminate, with an 

 unpleasant odor when bruised; commonly planted; nati\e of 

 southeastern U.S ..C. bignoniuides Walt. 



1. Flowers in few-flowered open panicles about 15 cm long; calyx 

 often sparsely pubescent; corolla about 6 cm in diameter, in- 

 conspicuously spotted w^ithin, the lower lobe emarginate; cap- 

 sules thick-walled, about 1.5 cm in diameter; leaves caudate- 

 acuminate, inodorous; woods, s. 111., often planted elsewhere. 

 June- July. [C. cordijolia Duham.] ...C. speciosa Warder 



3. Bignonia L. 



B. capreolata L. Cross-vine. Alluvial soil, s. 111., northw. to Rich- 

 land Co. Apr.-May. [Anisostichus capreolata (L.) Bureau]. 



4. Campsis Loiu\ — Trvmipet-creeper 



C. radicans (L.) Seem. Open woods and fields throughout 111., 

 except the northern counties. June-Aug. Native in s. 111., but in e. 111. 

 probably adv.; reported by Patterson in 1876 as occurring in "Peoria 

 and Henderson counties, southward." 



110. Acanthaceae J.St.Hil. — Acanthus Family 



1. Corolla irregular; .stamens 2. 



2. Flowers without bracts, in long-peduncled axillary spikes or heads 



1. Dianthern 



2. Flowers with broad bracts, in nearly sessile axillaiy or terminal panicles 



2. Dicliptera 



1. Corolla nearly regular; stamens 4 3. Ruellia 



1 . Dianthera L. — Water-willow 

 1. Flowers in capitate spikes 1-3 cm long; stem 30-90 cm tall; leaves 

 linear-lanceolate; common along muddy shores and in shallow 



water throughout 111. June-Aug D. americana L. 



1 . Flowers scattered along one side of the slender peduncles ; stem 1 0- 

 30 cm tall ; leaves elliptical ; wet woods and borders of swamps, 



rare; Alexander and Pulaski counties 



D. lanceolata (Chapm.) Small 



2. Dicliptera Juss. 



D. hrachiata (Pursh) Sprcng. Low rich woods, rare; Massac Co., 

 R. A. Evers in 1951. 



