20 



ACANTHACEAE— BIGNONIACEAE 



Verba&cum — Mullein 



(Lat. verbascum, mullein) 



1. Leaves woolly, white to gray 



a. Leaves densely woolly, decurrent on the stem 



b. Leaves thinly woolly, not decurrent 



2. Leaves smooth, green 



/'. thdpsui 



. I '. I ych nil is 

 I ' . blattdria 



Acanthaceae — Acanthus Family 

 Herbs with opposite simple leaves; sepak 5, united, petals 5, united, stamens 4 or 2, ovary 2- 

 celled, stigmas 1 or 2, fruit a capsule; flower syncarpous, sympetalous, hypogynous, usually irregular. 



1. Leaves pinnatifid ; corolla of one 3-lobed lip Acanthus 



2. Leaves arrow-shaped; corolla 5-lobed, nearly regular Thunbcrgia 



Acanthus — Acanthus 



(Gr. akantha, prickle, from the prickly leaves) 



1. Leaves spiny, deeply cut A. spinosus 



2. Leaves nearly or quite smooth, lobed A. mollis 



Thunbergia — Thunbergia 



More or less climbing; flowers varicolored T. aldta 



Gesneraceae — Gesnera Family 

 Herbs with simple leaves; sepals 5, united, petals 5, united, ovary 1-celled with 2 parietal 

 placentae, stigma entire or 2-lobed, fruit a capsule ; flower syncarpous, sympetalous, hypogynous, 

 regular or irregular. 



1. Stems leafless 



a. Stamens 4 Sinningia 



b. Stamens, at least the anther-bearing, 2 Streptocarpus 



2. Stems leafy Achimenes 



Sinningia — Gloxinia 



(Named for the botanist, Sinning) 

 Leaves spatulate to rounded ; flowers varicolored 5. specidsa 



Streptocarpus — Streptocarpus 



(Gr. streptos, twisted, karpos, fruit, from the twisted pods) 



1. Leaf single, basal; flowers several on each scape . S. polydnlha 



2. Leaves several to many; flowers usually single S. Retzii 



Achimenes — Achimenes 



(Gr. acheimenes, not disturbed by winter, i. e., blooming late) 



1. Flowers violet blue A. longiflora 



2. Flowers reddish A. grandifldra 



Bignoniaceae — Catalpa Family 

 Herbs, or woody plants with simple or compound leaves, sepals united, petals 5, united mostly 

 into a 2-lipped corolla, stamens 4 or 2, ovary 1-4-celled, stigma 2-lobed; fruit a capsule or silique ; 

 flower syncarpous, sympetalous, hypogynous, irregular. 



1. Leaves pinnate; flowers on a scape, rose Incarvil, 



2. Leaves simple; flowers on the leafy stem, whitish Martynia 



Incarvillea — Incarvillea 



(Named for Incarville, a French missionary) 



1. Leaflets entire or toothed 



a. Leaflets toothed or nearly so 



b. Leaflets toothed throughout 



2. Leaflets cleft 



Martynia — Unicorn Plant 

 (Named for'the English botanist. Martyn) 

 Leaves heart-shaped, entire, hairy; flowers whitish to lilac or yellowish 



/. dlgae 

 1. Delavdyi 



I. variabilis 



M. probosexdea 



