54 TILIACEX. (lINDEX FAMILY.) 



brvo in the axis o( fleshy alhumcn. — Ilerhs or shrubs, with altoniatc leaves, 

 aud siiuill llowers iu axillary clusters. 



1. "W, Americana, L. Stem erect, villous; leaves ovate or oldoup, 

 acute or nlitusf, sirralc, jilioute, tomentose on hotii surfaces; heads of Howers 

 gloliose, stalked, or sut)sessile and shorter than tiie jjetiolee, the ujiper ones 

 often spiked ; calyx hirsute ; tlowers yellow. — South P'lorida. — Stem 2° -3° 

 high, rigid. Leaves l' - 2' loug. 



3. MELOCHIA, L. 



Involuccl 3-leaved or none. Calyx S-cleft. I'etals 5, convolute. Stamens 

 5, the lilaments more or less united near the base. Cells of the ovary 1 - 2- 

 ovuk'il ; styles 5, separate, or partly united ; stigmas club-shaped. Capsule 

 5-celled, few-seeded. — Ilerlw or shrubs, with stellate pubescence, and clus- 

 tered white or j)urple flowers. 



§ RiEDLEiA. Capsule septicidal or loculicidal. Involucel 3-leai-ed. 

 Flowers purple. 



1. M. serrata, Beuth. Shrubby, pilose ; stem slender, branching (2° -4° 

 hitch) ; leaves ovate, acute, uneijually serrate ; stipules linear, longer than the 

 petioles; flower clusters axillary, globose, the up])er ones spiked; corolla 

 showy, i)urple {V wide). — Pine woods, South Florida. Oct. 



2. M. hirsuta, Cav. Herbaceous, pubescent and slightly hispid ; leaves 

 ovate, subcordate, crenate-serrate ; stipules subulate, shorter than the petioles ; 

 flower clusters terminal ; corolla pale purple, yellowish within. — Streets of 

 Savannah (Feaij). East Florida {Curliss). — Stem l°-2° high. Corolla 

 •J' wide. 



OiJDKR 19. TILIACE^E. (Linden Family.) 



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

 Flowers axillary or extra-axillary, hypogynous, polyandrous. Sepals 

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

 bricated in the bud. Stamens distinct or united in clusters : anthers 

 2-celled, the pollen grains smooth. Style single. Stigma 4 - 10-lobed. 

 Capsule 2- 5-cened, 1- many-seeded. Seeds anatropous. Embryo ia 

 the axis of fleshy albumen. Cotyledons flat, leafy. 



1. TILIA, Tourn. Linden, Basswood. 



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

 clusters, with a petal-like appendage (sterile stamen) o])i)osite 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 pe- 

 duiules, which are connate below with a large ligulate veiny bract. Flowers 

 cream-color. 



1. T. Americana, L. Leaves smooth and green on both surfaces, o}>- 

 liciuelv cordate or truncate at the base, sharply serrate. — Mountains of 

 Georgia and North Carolina. June. — A large tree. Leaves 4'- 5' wide. 



