200 



BIGNONIACEAE. 



[Vol. III. 



2. Catalpa speciosa Warder. 



Catawba Tree. Larger Indian Bean. 



(Fig. 3368.) 



Catalpa speciosa Warder; Engelm. Coult. Bot. 



Gaz. 5: 1. 1880.' : ' 



Catalpa cordifolia Duham. Nouveau, 2: pi. 5. 



1802. Not Moench, 1794. 



A tree, with thick rough bark, reaching a 

 maximum height of 120 and a diameter 

 trunk of 4)4, similarto the preceding species. 

 Leaves not unpleasantly scented, broadly 

 ovate.commonly entire.long-acuminateat tbe 

 apes; panicles few-flowered; corolla faintly 

 mottled within, the tube obconic, the limb 

 only slightly oblique, the lower lobe emar- 

 ginate; capsule thick-walled, io / -2o / long, 

 nearly io // in diameter. 



In woods, southern Illinois to Tennessee, west 

 to Missouri and Arkansas. Wood brown, soft f 

 weak, durable. Weight per cubic foot 26 lbs. 

 May-June. 



Family 31. MARTYNIACEAE Link, Handb. 1: 504. 1829. 



Unicorn-plant Family. 



Herbs, with opposite leaves, or the upper sometimes alternate, and perfect 

 irregular flowers, racemose in our species. Calyx inferior, 4-5-cleft or 4-5- 

 parted or sometimes split to the base on the lower side. Corolla gamopetalous, 

 irregular, the tube oblique, often decurved, the limb slightly 2-lipped, 5-lobed, 

 the lobes nearly equal, the 2 upper ones exterior in the bud. Anther-bearing 

 stamens 4, didynamous, or the posterior pair sterile; anthers 2 -celled, the sacs 

 longitudinally dehiscent. Ovary 1 -celled, with 2 parietal placentae expanded 

 into broad surfaces, or 2-4-celled by the intrusion of the placentae or by false 

 partitions; ovules numerous or few in each cavity of the ovary, anatropous; 

 style slender; stigma 2-lobed or 2-lamellate. Fruit various in the different 

 genera. Seeds oblong or orbicular, compressed, wingless or narrowly winged; 

 endosperm none; embryo large; cotyledons fleshy, flat; radicle short and straight. 



Three genera and 10 species, mainly tropical. 



i. MARTYNIA L. Sp. PI. 618. 1753. 



Coarse diffusely branched glandular-pubescent and viscid strong-scented herbs, with oppo- 

 site or alternate long-petioled leaves, and large violet purple whitish or mottled flowers in 

 short terminal racemes. Calyx 1-2-bracteolate at the base, campanulate, inflated, unequally 

 5-cleft, deciduous. Corolla funnelform-catnpanulate, oblique, decurved, the 5 lobes nearly 

 equal, spreading. Stamens 4 in our species; anthers gland-tipped, their sacs divergent. 

 Ovary i-celled, the 2 parietal placentae intruded and expanded in the center of the cavity 

 into broad surfaces bearing the ovules in 1 or 2 rows. Fruit an incurved beaked loculicidally 

 2-valved capsule, the exocarp somewhat fleshy, the endocarp fibrous, woody, crested below 

 or also above, gelled by the extension of the placentae. Seeds numerous, tuberculate. 

 [Named for John Martyn, 1693-1768, professor of botany at Cambridge, England.] 



About 8 species, natives of America. 

 era United States. 



Besides the following, 2 others occurMn the southwest- 



