56 SAXIFRAGACEH, (SAXIFRAGE FAMILY.) 
2. S. integrifolia, Hooker. Larger; leaves shorter petioled; flowers in a thyrsiform 
panicle; calyx lobes reflexed. ‘ 
3. S. Mertensiana, Bong. Scape and leaves from a scaly granulate bulb; leaves 
rounded and cordate on long naked petioles; crenately or incisely lobed, the lobes often 
3-toothed at the end; 2 to 4 inches across; calyx free. 
2, BOYKINIA, Nutt. 
Calyx 5-lobed, adherent to the ovary. Petals 5, entire, closed. Stamens alternating 
with the petals. Ovary and capsule 2-celled.—Perennial herbs, with creeping rootstocks, 
‘ simple leafy stems; the leaves alternate, round-reniform, palmately lobed and incised or 
toothed, the teeth with callous-glanduler tips, and the petioles mostly with stipule-like 
appendages at the base. 
1. B. occidentalis, Torr. & Gr. Smoothish, or with some rusty hairs; a foot or 
two high; leaves thin-membramaceous, 3-7-lobed; petals white, 2 or 3 lines long. 
3. THLLIMA, R. Br. 
Calyx campanulate or turbinate, 5-lobed; the base coherent with the lower part of the 
ovary. Petals 5, inserted in the throat or sinuses of the calyx, laciniate-pinnatifid, 
3-7-lobed, or entire. Stamens 10, short. Ovary short, 1-celled, with 2 or 3 parietal 
placente; styles 2 or 3, very short; stigmas capitate. Capsule conical, slightly 2-3- 
beaked.—Perennials, with round-cordate and toothed or palmately divided chiefly alter- 
nate leaves, few on simple stems, their petioles with stipule-like dilations at the base, 
and the flowers in a simple terminal raceme; petals white or pimkish. 
Fetals laciniate-pinnatifid .............-..-000 ERG aA sroediaiesdivinarete T. grandiflora. 1 
Petals entire, spatulate-obovate........... eiraik aay oin toca a eateereesfavslaye T. Cymbalaria, 2 
Petals entire; pedicels very shorb........ 2... cee cece eee cece te eeee T. Bolanderi. 3 
Petals obtusely 3-lobed........2ss0cccsccsecsevccerscencess ...k- heterophylla, 4 
Petals-acutely 3-lobed.. . 5s sions. Wie ia einss eden s cd eee yes ¥ vasa devas anaes T. affinis, 5 
1. T. grandiflora, Dougl. A foot or more high, from short stout tufted rootstocks, 
hirsute or pubescent; leaves lobed, 2 to 4 inches in diameter; flowers dull-colored. 
2. T. Cymbalaria, Gr. Stem or scape filiform, 4 to 12 inches high, bearing mostly 
a pair of opposite 3-lobed or parted leaves; radical leaves somewhat 3-5-lobed, half an 
inch across, flowers few and slender pediceled, white. 
3. T. Bolanderi, Gr. Stems a foot or two high, 14-leaved; radical and lower 
leaves lobed, the upper 3-5-parted; petals rarely with a small tooth on each side, white. 
4, T. heterophylla, Hook. & Arn. Stems slender, a foot or less in height 1-3- 
leaved; leaves similar to the last, but smaller; flowers fewer and smaller, sometimes 
‘ flesh-colored. 
5. TT. affinis, Gr. Rougher-pubescent; stem and leaves similar to the last; calyx 
densely rough glandular-pubescent; petals 4 or 5 lines long, white or flesh-colored. 
