56 TILIACE^. 



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, soUtary, 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 soraetiraes sub- 

 cordate. ^ Prickly Sida. 



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

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

 acuminate. Nap(za Icevis Linn. 



Rocky places. Penn. to Virg. ; rare. Pursh. July. '21-. — Stem 3 — 4 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. Napaa dioica and A^. scahra 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 Avicenncz Goeert. Torr. ^ Gr. 



Waste groimd. N. S. July, Aug. (X). — Stem 3 — 5 feet high, with spreading 

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



Indian Mallow. 



Order XXIII. TILIACE^E.— Linde:;s. 



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, -S-celled ; cells 2-seeded,(i^r2^'i^.) • 

 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. Americaiia Linn. Mich. f. T. Canadensis Mich. 



