BROOMRAPE FAMILY MARTYNIA FAMILY 141 



1. Corolla 1.5-2 cm. long; anthers smooth O. ludovicidna 



2. Corolla 2-2.5 cm. long ; anthers woolly 0. multiflora 



THALESIA Rafinesque 1818 BROOM-RAPE 



(Named for the Greek philosopher, Thales) 



Plate 22, fig. 6. 



Sepals 5, united into a bell-shaped calyx, petals 5, yellowish, white or 

 violet, united into a 2-lipped corolla, the tube elongated, curved, upper lip 

 erect-spreading, 2-lobed, the lower spreading, 3-lobed, lobes all nearly 

 equal, stamens 4 in pairs on the tube of the corolla, included, ovary with 1 

 cavity, ovoid, style slender, deciduous, stigma shield-shaped or transversely 

 2-lobed ; flowers on long bractless stalks ; leaves reduced to scattered scales 

 the color of the flowers ; root-parasites. 



1. Stem nearly absent; flowers 1-4; calyx-lobes 



lanceolate T. uniflora 



2. Stem 2-5 in. high; flowers 3-15; calyx-lobes tri- 



angular T. fasciculdta 



MARTYNIACEAE MARTYNIA FAMILY 



Sepals 4-5, united into a 4-5^cleft calyx, petals 5, united into a 2- 

 lipped corolla, lobes nearly equal, the 2 upper ones exterior in the bud, 

 stamens 4 in pairs on the tube of the corolla, fertile or the posterior 

 pair sterile, ovary with 1 cavity, with 2 broad ovule-bearing surfaces, or with 

 2-4 cavities by false partitions, style slender, stigma 2-lobed, fruit various in 

 the different genera ; flowers in racemes ; herbs with opposite leaves, or the 

 upper sometimes alternate. 



MARTYNIA Linne 1753 UNICORN PLANT 

 (Named for the English botanist Martyn) 



Sepals 5, united into a bell-shaped, inflated calyx, petals 5, violet, 

 purple, whitish or mottled, united into a funnel- or bell-shaped corolla, 

 the lobes nearly equal, spreading, stamens 4 on the tube of the corolla, ovary 

 with 1 cavity, the ovules in 1 or 2 rows on 2 broad places of attachment in 

 the center of the cavity, fruit an incurved, beaked 2-valved capsule, some- 

 what fleshy without, fibrous and woody within, ridged below or also above, 

 4-celled; flowers in short terminal racemes; leaves opposite or alternate, 

 long-stalked; strong-scented annual. 

 Stems creeping, 1-5 ft. long; leaves 4-12 in. wide; 



flowers 4-5 cm. long M. louisidna 



