56 TILIACE^J. 



taceous bracts. Style many-cleft at the top. Carpels numerous, 

 arranged circularly, 1 -celled, 1 3-seeded. 



1. S. spinosa Linn. : leaves ovate-lanceolate, toothed, with the tubercles 

 at the base spiny ; pedicels axillary, solitary, shorter than the stipules and 

 petioles ; carpels 5, bi-rostrate. 



Barrens and road sides. N. Y. to Car. W. to Miss. July, Aug. (J). Stem 

 1 2 feet high, branched. Flowers solitary, yellow. Leaves sometimes sub- 

 cordate. Prickly Sida. 



2. S. Napcea Willd. : leaves palmately 5-lobed, smooth ; lobes oblong, 

 acuminate, toothed; peduncles many-flowered; capsules 10, awnless, 

 acuminate. Napasa Icevis Linn. 



Rocky places. Penn. to Virg. ; rare. Pursh. July. QJ..- Stem 34 feet high. 

 Flowers small, white. Smooth Sida. 



3. S. dioica Willd. : leaves palmately 7-lobed, rough ; lobes lanceolate, 

 incisely toothed ; peduncles many-flowered, bracteate, subcorymbed ; flow- 

 ers dioecious ; capsules 10, awnless. Napcea dioica and N. scabra Linn. 



Stony ground. Penn and Virg. Oct. %. Stem 4 5 feel high. Flowers 

 small, white, crowded into heads. Rough Sida. 



4. S. Abutilon Linn. : leaves roundish-cordate, acuminate, toothed, 

 tomentose ; peduncles shorter than the petioles ; capsules 15, truncate, 

 bi-rostrate, hairy. Abutilon Avicennce Gceert. Torr. $ Gr. 



Waste ground. N. S. July, Aug. (T). Stem 3 5 feet high, with spreading 

 branches. Leaves large. Flowers orange yellow. Introduced from India. 



Indian Mallow. 



ORDER XXIII. TILIACE^E. LINDENS. 



Sepals 4 5, distinct or united, with a valvate aestivation. 

 Petals 4 5, entire, rarely wanting. Stamens generally in- 

 definite, hypogynous, distinct; anthers 2-celled. Disk often 

 with 4 5 glands at the base of the petals. Ovary of 2 10 

 united carpels ; style 1 ; stigmas as many as the carpels. Fruit 

 dry, of several cells. Seeds solitary or numerous, with fleshy 

 albumen. Trees or shrubs, with simple, stipulate, alternate 

 leaves and axillary flowers. 



TILIA. Linn. Linden or Lime Tree. 

 (A name of uncertain origin.) 



Calyx 5-parted, deciduous. Petals 5, naked, or with a small 

 scale within. Stamens many ; filaments free, or somewhat in 

 sets. Ovary globose, villous, 5-celled ; cells 2-seeded, ( Fruity 

 coriaceous, by abortion 1 -celled, 1 2-seeded. 



1. T. glabra Vent.: leaves deeply cordate, abruptly acuminate, acutely 

 serrate, subcoriaceous, smooth ; flowers in cymes ; petals truncate at the 

 apex, crenate ; style as long as the petals ; fruit ovate, somewhat ribbed. 

 T. Americana Linn. Mich. f. T. Canadensis Mich. 



