342 TILIACE^. Trium/etta. 



Order XXVIII. TILIACE^. 

 By a. Gray. 



Trees, shrubs, or herbs, polyandrous and with two-celled anthers and valvate 

 calyx like Sterculiacece. Sepals deciduous. Petals not rarely imbricated in the 

 bud. Stamens hardly if at all monadelphous, yet sometimes 5-adelphous at base 

 (the phalanges opposite the petals), and unconnected with the petals. Ovary 

 2-10-celled, and styles united into one; ovules anatropous or incompletely so, 

 commonly pendulous with rhaphe ventral. Embryo in rather abundant fleshy 

 albumen, and with broad foliaceous cotyledons. Except Tilia this is a mainly 

 tropical order or of southern rather than northern hemisphere. 



* Herbaceous or barely shrubby : sepals 5, distinct, narrow : petals somewhat convolute in 

 the bud. 



1. TRIUMFETTA. Petals with glandular thickeuiug or pit at base inside (rarely want- 

 ing). Stamens 10 to 30, distinct, usually on a short torus bearing the 2-.5-celled ovary. 

 Style filiform ; stigma 2-.'J-lobed ; cells of ovary 2-ovuled. Fruit globular, bur-like, being 

 covered with prickles or bristles, indehiscent, rarely splitting into 2 to 5 closed carpels. 



2. CORCHORUS. Petals naked at base. Stamens 10 to 30 or more, distinct. Ovary 

 2-5-celled; style commonly short; stigma slightly lobed. Capsule various, 2-5-celled, 

 many-seeded, 2-5-valved, loculicidal. 



* * Trees : petals imbricate or incompletely convolute in the bud. 



3. TILIA. Sepals 5, lanceolate or ovate, subcoriaceous. Petals spatulate-oblong. Stamens 

 numerous, on a short hypogynous torus, either indistinctly aggregated in 5 clusters or (in 

 the American species) more or less 5-adelphous with a petaloid body (staminodium) to each 

 phalanx placed before a petal ; anther-cells quite separate or even short-stalked by forking 

 of the apex of the filament. Ovary 5-celled, with a pair of ovules in each cell ; style colum- 

 nar, 5-lobed at summit; lobes introrsely stigmatose. Fruit globular, dry and woody- 

 coriaceous at maturity, by abortion 1-celled, 1-2-seeded, indehiscent or tardily bursting; 

 embryo in hard fleshy albumen ; cotyledons contorted and crumpled, very broad and thin, 

 palmately 5-lobed. 



1. TRIUMFIITTA, Plumier. (G. B. Triumfetti or Trionfetti, Italian 



botanist.) — Tropical weedy plants, yellow-flowered. — Nov. Gen. 40, t. 8; L. 



Gen. no. 864. — One species has reached Florida. 



T. SEMiTRfLOBA, Jacq. Suffrutesccnt annual, minutely pubescent : leaves round-ovate, serrate, 

 some angulate or 3-lobed : flowers in small paniculate fascicles : sepals quarter inch long, 

 apiculate behind the hooded apex : stamens about 1 5 : fruit 2-celled, 2 lines in diameter, the 

 prickles as long, uncinate tipped, retrorsely hispid. — Enum. PI. Carib. 22; L. Mant. 73; 

 Chapm. Fl. ed. 2, 611 ; Schumann in Mart. Fl. Bras. xii. pt. 3, 134, t. 27, f. 2. — A weed near 

 dwellings in Peninsular Florida. (Nat. from W. Ind.) 



2. CORCHORUS, Tourn. (The Greek and Latin name of some plant, 



early applied to this genus.) — Mainly tropical or subtropical herbs or low 



shrubs ; with small yellow flowers axillary or opposite the leaves. — Inst. t. 135 ; 



L. Gen. no. 442; Gray, Gen. 111. ii. 93, t. 137. 



C. hirtUS, L., var. glabellus, Gray. Annual, slender, from somewhat appressed pubes- 

 cent to almost glabrous; leaves mostly lanceolate-oblong and acute, evenly serrate, slender- 

 petioled : flowers 1 to 3 in a fascicle, 2 or 3 lines long, exceeding tlie pedicels : sepals 



