464 PLANTAGINACEAE (PLANTAIN FAMILY) 



(before dehiscence) glabrous or nearly so. From the Saskatchewan to Texas 

 and westward. 



2. THALESIA Raf. 



Glandular or viscid-pubescent simple-stemmed herbs, with scattered scales 

 and long-peduncled flowers. Calyx -campanulate or hemispheric, the lobes 

 acute or acuminate. Corolla-tube elongated, curved, the limb slightly 2- 

 lipped, the upper Irp erect-spreading, 2-lobed, fhe lower spreading, 3-lobed, 

 the lobes all nearly equal. Stamens included; anther-sacs mucronate at the 

 base. Ovary ovoid; style slender, deciduous; stigma peltate, or transversely 

 2-lamellate. Aphyllon in part. 



Flowers few or solitary 1. T. uniflora. 



Flowers several or many . . . . . . . . . 2. T. fasciculata. 



1. Thalesia uniflora (L.) Brit. Mem. Torr. Club 5: 298. 1894. Scaly 

 stem short and nearly subterranean, bearing few scapes 1-2 dm. high: calyx- 

 lobes mostly much longer than the tube, subulate, usually attenuate: corolla 

 violet-tinged, about 2.5 cm. long; the lobes obovate and rather large. 

 Damp woods; from Newfoundland to Texas and westward across the con- 

 tinent. 



2. Thalesia fasciculata (Nutt.) Brit. 1. c. More pubescent and glandular; 

 stem often emergent and mostly as long as the numerous fascicled peduncles, 

 not rarely shorter: calyx-lobes broadly- or triangular- subulate, not longer than 

 the tube, very much shorter than the dull yellow or purplish corolla: lobes of 

 the latter oblong and smaller. From Lake Michigan to Arizona and westward 

 across the continent; on Artemisia, Eriogonum, etc. 



107. MARTYNIACEAE Link. MARTYNIA FAMILY 



Annual or perennial herbs, with thick branching stems. Leaves opposite; 

 blades expanded, simple, mostly contracted into petioles. Flowers perfect, 

 irregular. Calyx inferior, sessile or stalked; lobes 4 or 5. Corolla showy; 

 tube oblique, often decurved; limb 2-lipped; lobes 5, spreading, the 2 upper 

 exterior in the bud. Stamens didynamous; anthers with spreading sacs. 

 Ovary 1-celled; style slender; stigmas 2. Fruit a beaked capsule. 



1. MARTYNIA L. UNICORN PLANT 

 Characters of the family. 



1. Martynia louisiana Mill. Gard. Diet. Ed. 8. No. 3. 1768. Leaves heart- 

 shaped, oblique, entire or undulate, the upper alternate: corolla dull white 

 or purplish, or spotted with yellow and purple: endocarp of the -fruit crested 

 on one side, long-beaked. In waste places; rare in our range as an escape 

 from cultivation; native in the Mississippi valley. 



108. PLANTAGINACEAE Lindl. PLANTAIN FAMILY 



Chiefly acaulescent, with 1-several-ribbed or nerved radical leaves, simple 

 spicate inflorescence, and regular 4-merous flowers. Corolla scarious and 

 veinless, usually marcescent. Stamens 4 or 2, with filiform filaments and ver- 

 satile anthers. Fruit a capsule (pyxis). 



PLANTAGO L. PLANTAIN 



Acaulescent or short-caulescent herbs, with mostly radical parallel- veined 

 leaves and small white or greenish flowers in terminal spikes or heads. Calyx- 



