Jones: Flora of Illinois, 142. Acanthaceae 233 



140. Bignoniaceae Pers. — Trumpet-creeper Family 

 I . Trees ; leaves simple, ovale. 



2. Leaves opposite; stamens 4; capsules ovoid; pith chambered or hollow 



1. PauloTunia 



2. Leaves usually in whorls of 3 ; stamens 2 ; capsules long-cylindrical ; pith continuous 



2. Calalpa 



1. Climbing or trailing shrubs; leaves compound; anther-bearing stamens 4. 



3. Leaflets 2. entire; leaves with a tendril; pods flat 3. Dignonia 



3. Leaflets 7-11, serrate; leaves without a tendril; pods cylindrical 4. Campsts 



1. Paulownia Sieb. & Zucc. 



P. tomentosa (Thunb.) Steud. Princess Tree or Paulownia. Cultivated; 

 native of China; sometimes apparently spontaneous in s. 111. Golconda, Pope 

 Co., G. N. Jones 12012, 12013. [P. imperialis Sieb. & Zucc] 



2. Catalpa Scop. 



1. Leaves long-acuminate, inodorous; panicles few-flowered, about 15 cm. long; 

 corolla about 6 cm. in diameter, the lower lobe emarginate; capsules about 



1.5 cm. thick; s. 111.; often planted elsewhere. June-July 



C. speciosa Warder 



1 . Leaves abruptly acuminate, with an unpleasant odor; panicles many-flow- 

 ered, 20-25 cm. long; corolla 4-5 cm. in diameter, the lower lobe entire or 

 nearly so; capsules 5-8 mm. thick; commonly planted; native of s.e. U.S. 

 C. bignonioides Walt. 



3. BiGNONIA L. 



B. capreolata L. Cross-vine. Alluvial soil, s. III. May. \^Anisostichus capre- 

 olata (L.) Bureau] 



4. Campsis Lour. — Trumpet-creeper 



C. radicans (L.) Seem. Open woods throughout III., except the n. counties. 

 June-Aug. [Bignonid radicans L.; Tecoma radicans (L.) Juss.] 



141. Martyniaceae Link — Unicorn-plant Family 



1. Martynia L. — Unicorn-plant 



M. louisianica Mill. River banks and waste ground, local. July-Sept. [M. 

 proboscidea Glox.] 



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



I. Plants growing in water or along muddy shores; leaves linear-lanceolate; corolla dis- 

 tinctly 2-lipped; fertile stamens 2 \. Dianihera 



1. Plants of drier ground; leaves wider; corolla nearly regular; fertile stamens 4 



2. RuelUa 



1. Dianthera L. — Water-willow 



D. americana L. Common along muddy shores of streams. June-Aug. 



