L¥Z Berberidaceae 
usually few, ribbed or veined. (Said to be from Gk. thallo—to become green; referring 
to the young shoots.) 
A. Akene flat, two edged. 
B. Flowers perfect; akenes half rhombic-ovate. C. E. 
T. sparsiflorum Turcz. 
BB. Flowers dioicous. 
C. Akenes lanceolate, acuminate. W. C. E. 
T. occidentale Gray 
CC. Akenes ovate or oblong or orbicular, blunter. 
D. Akenes few to numerous, 4—6 mm. long, ovate; seed-head usually not 
globular. W.E.  T. fendleri Engelm. 
DD. Akenes numerous, about 6 mm. long, obovate; seed-head dense, globular. 
W. T. polycarpum Wats. 
AA. Akenes terete or but slightly flat, ovate to short-oblong. 
E. Leaves glabrous and glaucous; flowers dioicous. FE. 
T, venulosum Trel. 
EE. Leaves obscurely glandular or waxy; flowers polygamous. E. (T. dasvcar- 
pum. ) T. purpurascens L. 
BERBERIDACEAE Barberry Family 
Herbs or shrubs, perennial (ours). Leaves simple or compound, alternate, often 
all basal; stipules present or none. Flowers perfect, solitary or in racemes. Sepals and 
petals generally imbricated in several sets. Stamens opposite the petals and as many as 
them; anthers extrorse, opening by valves (ours). Pistil 1 (ours); style short, ovary 
superior. Fruit a berry or capsule. Seeds 2—many. 
A. Herbs; leaves deciduous; ternately !——3-compound, not spiny. 
B. Leaf only 1; leaflets 3; flowers in a spike; sepals and petals none. 
ACHLYs (p., 172) 
BB. Leaves more than I; leaflets more than 3 to a leaf; flowers in a panicle; sepals 
and petals present. VANCOUVERIA (p. 172) 
AA. Shrubs; leaves evergreen, pinnately |-compound, spiny-toothed at margin. 
BERBERIS (p. 173) 
ACHLYS VANILLA-LBEAF 
Herbs, glabrous. Leaf 1, basal, 3-foliolate. Flowers small, white, in a spike; spike 
naked, crowded, terminal, on a scape. Sepals none. Petals none. Stamens 9 or more, 
in 3 or more rows} filament slender, the outer dilated at the summit. Stigma sessile, di- 
lated. Fruit at first somewhat fleshy, later dry and coriaceous, lunate-incurved, dorsally 
keeled. Seed 1. (Gk. achlys—mist; suggested by the flowers.) W. C. 
A. triphylla DC.  (Sweet-after-Death) 
VANCOUVERIA BARREN-WORT 
Herbs, slender. Leaves ternately 2—3-compound.: Flowers white or yellow, in 
racemes; racemes open, paniculate, on a naked scape; bracts of the raceme 69 obe 
long, membranous. Sepals 6, obovate, reflexed, falling with the bracts. Petals 6, 
shorter than the sepals and opposite them, linear-spatulate, nectary-like, reflexed. Fruit 
a capsule. Seeds many. (Honor of G. Vancouver, a Pacific explorer. ) 
A. Leaves thin, membranous, withering soon after fruit matures; leaf-margin flat or 
nearly so, not white-margined. W. C. 
V. hexandra M. & D. 


