114 Kansas Academy of Science. 



one to several in each loculus, anatropous, or nearly so; style simple; stigma 

 two- to three-lobed. Capsule two- to three- valved; seeds reticulated. 



663. Tradescantis virginiana L. Spiderwort; "Spider Lily." Common 

 in rich, alluvial soil in valley lands; more frequent east than west; 4-8 dm. 

 Flowers deep blue, purple, lilac, violet, crimson, rose color, white; floral 

 parts often duplicated; even four sepals, four petals, eight stamens, and a 

 four-parted gynoecium is not unusual; capable of improvement by cultiva- 

 tion. May. (ASU) 



664. Tradescantia occidentalis (Britt.) Western Spiderwort. Dry soils, 

 W. K. ; 1-4 dm. ; frequent in the damper soils of the semiarid region. 

 Flowers violet, lilac, rose, or white, much the same as T. virginiana re- 

 duced. Leaves narrow, hairy; bracts narrow. Occasionally found growing 

 side by side with T. virginiana, which it most resembles. May. (AS) 



665. Tradescantia bracteata Small. Large-bracted Spiderwort. Sandy 

 soil, on low prairies, E. K.; occasional. May. (ASU) 



666. Tradescantia reflexa Raf. Reflexed Spiderwort. Drift hills and 

 well-drained drift soil, N. E. K. ; frequent. June. (ASU) 



667. Tradescantia brevicaulis Raf. Low Spiderwort. Moist sandy soil, 

 J to H dm- high; flowers large, frequent. April. (AS) 



668. Commelina communis L. Asiatic Dayflower. Rich alluvial banks^ 

 Wyandotte and Cherokee counties; rare. July. (A) 



669. Commelina virginica L. Dayflower. Moist or damp alluvial soils,, 

 general throughout E. K., though not very common. June. (ASU) 



670. Commelina angustifolia Mx. Sandhill Dayflower. Common in the 

 sand hills south of the Arkansas river, and as far northeast as Ottawa 

 county. Similar to C. virginica, but leaves narrow and plant adapted to a 

 dry soil and climate. Third petal twisted up and very small. July. (ASU) 



67L Commelina crispa Wooton. Curly-leaf Dayflower. Moist soil and 

 sheltered alluvial banks, general; frequent to common. June. (ASU) 



672. Commelina hirtella Vahl. Bearded Dayflower. Moist and shel- 

 tered situations, Miami county ; rare. July. (U) 



Family 49. Pontederiace.e. Pickerel-weed Family. 

 Perennial aquatic plants, from creeping or floating rootstocks, with 

 laminodia having cordate-ovate, orbicular, reniform, or ovate campylo- 

 drome- nerved prolaminse, or entirely linear or grass-like laminodia. Flow- 

 ers zygomorphous, perfect, few or several. Perianth of three colored 

 petals and three dissimilarly shaped sepals, all united below into a two- 

 lipped tube free from the ovulary. Stamens six, trimorphous, inserted on 

 the tube of the perianth ; anthers linear-oblong, bisporangiate, versatile. 

 Ovulary imperfectly trilocular, with axile placentas, or unilocular by sup- 

 pression of two of the carpels or reduction of the three parietal placentae; ■ 

 style trimorphous ; stigmas minutely three-toothed. 



673. Heteranthera dubia Macmillan. Water Mud-plantain. Stillwater^ 

 W. K.; frequent in spots. Leaves linear, subaqueous. July. (A) 



674. Heteranthera limosa Willd. Small Mud-plantain. Mud or shallow 

 water, W. K. ; frequent. Aug. (AS) 



675. Heteranthera reniformis Ruiz & Pavon. Mud-plantain. Muddy 

 ditches and shallow water, E. K. ; frequent some seasons, and not at all 

 other years, depending on the rainfall at the proper time. July. (SU) j 



