ORDER 152. SPI1>ERWORTS. 



Analysis of the Genera. 



^ Perianth greenish outside, yellow inside. Stamens 6. 



Stigma 1. Seeds many. Leaves s word-shaped. 



Scape nearly naked. 

 Perianth green or brownish. 



Capsule 3-celled, 8-seede 



Leases linear. 

 j P-iriauth green or brownish. Stamens 6, rarely 3. 



Stigmas 3. Capsule many-seeded. Leaves terete, 



or linear, or none. Rush. Bullrusk. JUN'CDS. 



Nartlwciain. NARTHECIDM. 

 Stamens 6. Stigmas 3. 

 Stems leafy, jointed. 

 Wood Rush. LC'ZULA. 



Fig. C65. Flower of Luznla, much magnified : p. the green peri- 

 anth; *, tho 6 stamens; r, the 3 stigmas. 



ORDER CLII. COMMELYNACEJE. Spiderworts. 



fferbs with flat, narrow leaves which are usually sheathing at base ; 

 perianth of 2 circles, outer of 3 green sepals, inner of 3 colored petals : 

 stamens 6, on the torus ; ovary 2 or 3-celled ; style and stigma 1 ; 

 capsule 2 or 3-celled, with few seeds. 



Analysis of the Genera. 



Flowers irregular, clustered in a heart-shaped floral leaf. COMMELY'NA. 



Flowers regular, clustered, floral leaf like the rest. Spidewort. TRADKSCAN'TIA. 1 

 Flowers regular, solitary, axillary. Stamens 8. Moss-like herbs. S. MAYA'CA. 



TRADESCA2JTIA. Spiderwort. 



Flowers regular, in terminal, close umbels, subtended by 2 or 3 leaf-like 

 bracts. Petals broad, larger than the sepals. Filaments clothed with 

 'oiiited hairs. Juice viscid, spinning into cobwebs. 

 Leaves linear, sessile, not narrowed at the base, smooth....!, 2 

 Leaves ovate or lanceolate, narrowed at base, hairy. . . .3, 4 



1 T. Virgin'ica. Common S. Leaves broad-linear. Umbel many-flowered, ses- 



sile, terminal, with 2 leaf-like bracts. Petals large, blue or white. 



2 T. ro'sea. Roseate .S'. Leaves linear, long. Umbel few-flowered, with 2 ub- 



ulate bracts. Petals twice longer than sepals, rose-colored. Penn. S. 

 T. pilo'sa. Haii'y 8. Leaves lanceolate, iong-pointed. Umbels both terminal and 



axillary, many-flowers. Petals small, bluish-purple. W. 



I T. crassifo'lia. Thick-lv. S. Leaves ovate, some petiolate. acute, woolly beneath, 

 Flowers small, mse-purr>lp, terminal. Stem weak. leaves striped, t 



