TILIACEvE. (linden FAMILY.) 59 



1. AYEWIA, L. 



Involuccl none. Calyx 5-partcd. Petals on long capillary claws, connivcnt 

 over the stigma. Fertile stamens 5, alternating with 1-2 sterile ones, their fila- 

 ments united into a pedicellate cup. Style single. Stigma 5-angled. Capsule 

 5-lobed, 5-celled, loculicidally ,5-valved, the cells 1 -seeded. — Low shrubby plants, 

 with minute axillary flowers. Capsule rough. Albumen none. 



1. A. pusilla, L. Stems mostly simple, prostrate, downy; leaves (4"- 

 8" long) roundish or oblong, coarsely serrate ; peduncles solitary, reflcxed in 

 fruit; capsule depressed, rauricate. — South Florida. 11 — Stems 6'- 12' long. 

 Flowers purple. 



2. WALTHEBIA, L. 



Involucel 3-Ieaved, deciduous. Calyx 5-clcft. Petals .I, spatulate, convolute 

 in the bud. Stamens .I, united below. Ovary 1-cellcd, 2-ovuled. Style single. 

 Stigma pcnicillate or tuberculate. Capsule 2-valved, 1-secded. Embryo in the 

 axis of fleshy albumen. — Herbs or shrubs, with altei-natc leaves, and small flow- 

 ers in axillary clusters. 



1. W. Americana., L. Stem erect, villous ; leaves ovate or oblong, acute 

 or obtuse, seiTatc, plicate, tomentose on both surfaces ; heads of flowers globose, 

 stalked, or subsessile and shorter than the petioles, the upper ones often spiked ; 

 calyx hirsute; flowers yellow. — South Florida. — Stem 2° -3° high, rigid. 

 Leaves 1 ' - 2' long. 



Order 24. TILIACE^. (Linden Family.) 



Trees, rarely herbs. Leaves alternate, with deciduous stipules. Flow- 

 ers axillary or extra-axillary, hypogynous, polyandrous. Sepals 4-5, 

 valvate in the bud, deciduous. Petals 4-5, convolute or imbricated in tte 

 bud. Stamens distinct or united in clusters : anthers 2-ceIled, the pollen 

 grains smooth. Style single. Stigma 4-1 0-lobed. Capsule 2 - 5-celled, 

 1 - many-seeded. Seeds anatropous. Embryo in the axis of fleshy albu- 

 men. Cotyledons flat, leaf}'. 



■^ 1. TILIA, TouiTi. Linden. Basswood. 



Sepals 5. Petals 5, imbricated in the bud. Stamens numerous, united in 5 

 clusters, with a pjtjil-like appendage {sterile stamen) opposite each petal. Ovary 

 .5-celled, with 2 ovules in each cell. Stigma 5-lobed. Capsule 1-celled, 1-2- 

 seeded. — Trees, with cordate leaves, and several-flowered axillary peduncles, 

 which are connate below with a large ligulate veiny bract. Flowers cream-coldr. 



1. T. Americana, L. Leaves smooth and green on both surfaces, ob- 

 liquely cordate or truncate at the base, sharply seirate. — Mountains of Georgia 

 and northward. June. — A large tree. Leaves 4' - 5' wide. 



2. T. pubescens, Ait. Leaves hoary-toraentose on both surfaces, becom- 

 ing smoothish above, obliquely truncate at the base, mucronatc-serrate. — Rich 

 soil, Florida to North Carolina, and westward. June. — Leaves 4' -5' wide. 



