SAXIFRAGE FAMILY 193 



(2) Petals distinct, spatnlate and clawed; 



leaves and flower stalks sparsely hairy; 

 leaf lobes with spiny teeth H. Hdllii 



b. Calyx saucer-shaped, greenish ; petals tiny H. parvifolia 



JAMESIA Torrey and Gray 1840 

 (Named for James, an American botanist) 



PL 31, fig. 9. 



Sepals 5, united into a calyx, grown together with the ovary, petals 5, 

 white, stamens 10, the alternate shorter, ovary 1 -celled, styles 3-5; flowers 

 in terminal clusters ; leaves opposite, simple, toothed ; shrub. 

 Stems 2-6 ft. high; leaves gray-hairy below, 2-5 cm. 

 long ; flowers 1-2 cm. wide /. americdna 



LITHOPHRAGMA Nuttall 1840 

 (Gr. lithos, stone, phragma, hedge) 



PI. 31, fig. 4. 



Sepals 5, united into a bell- or top-shaped calyx, somewhat grown to 

 the ovary at the base, petals 5, white or pink, 3-7-parted, stamens 10, styles 

 2-3 ; flowers in terminal racemes ; leaves mostly basal, palmately divided or 

 parted; perennial. 



1.. Calyx bell-shaped, free from the ovary L. tenella 



2. Calyx top-shaped, united to the lower half of the 



ovary L. parviftora 



MITELLA Linne 1753 MITREWORT 

 (Gr. mitra, turban, from the form of the pod) 



PL 31, fig. 5. 



Sepals 5, united into a bell-shaped calyx, grown to the base of the 

 ovary, petals 5, white to greenish-yellow, cleft or pinnatifid, stamens 10 

 or 5, ovary 1-celled, styles 2, capsule 2-valved at the tip; flowers in spike- 

 like racemes; leaves mostly basal, simple; perennial. 



1. Petals yellowish, 7-9-pinnatifid ; stigma 2-lobed; 



stamens opposite the petals M. pentdndra 



2. Petals white, trifid to entire; stigma entire; sta- 



mens alternate with the petals M. trifida 



PARNASSIA Linne 1753 PARNASSIA 

 (Named from Mount Parnassus) 



PL 31, fig. 8. 

 Sepals 5, united into a short tube, free from or grown to the ovary, 



