RUTACE.E. 



249 



crested, enclosing the stamens and style. Stamens 8, monndel])hous, 

 the tube open on one side and adnate to the base of the potiils. Ovary 

 2-Collfd with one ovule in each cell; style long, curved. Capsule 

 with thin walls, flattened contrary to the partition, rounded - and 

 often notched above, dehiscing loculieidally at the margin. Seeds 

 with a conspicuous caruncle. (Polus, much, and gala, milk, an 

 ancient Greek name for some shrub used as a stimulant.) 



1. P. Californica Nutt. Stems many from the branching crown 

 of a cord-like deeply descending perennial root, mostly simple, 3 to 8 

 in. high; leaves oblong- or elliptic-ovate, \ to \\ in. long, distinctly 

 petioled; flowers of two sorts: — those near the root apetalous and 

 developing most of the. fruit; those of the terminal racemes with rose- 

 purple corolla 5 or 6 lines long, the petals more or less pubescent, at 

 least inside or on the margin, the sepals glabrous, with the shorter 

 ones 2 to 3 lines long; capsule broadly elliptical, glabrous, 3 lines 

 long; caruncle of the seed wrinkled and bladdery. 



Wooded or brush-covered slopes in the mountains from Ukiah, 

 Howell Mountain, and Marin Co. southward to Santa Barbara. . Not 

 reported from the inner Coast Ranges. May. 



P. cornuta Kell. of the Sierra Nevada, may be distinguished by 

 its greenish white flowers and densely tomentose sepals. 



50. RUTACE/E. Rue Family. 



Herbaceous or arboreus plants, ours shrubs or small trees, with 

 glandular-dotted or aromatic leaves and no stipules. Flowers regular 

 and symmetrical, or nearly symmetrical. Sepals and petals 4 or 5. 

 Stamens as many or twice as many, inserted outside of a hypogynous 

 disk encircling the base of the ovary. 



1. PTELEA L. 



Shrubs or small trees. Leaves pinnately trifoliolate, with sessile 

 leaflets. Flowers small, greenish white, in axillary paniculate cymes. 

 Flowers polygamous. Sepals, petals, and stamens 4 or 5. Ovary 

 with a short thick stipe, 2-celled; ceMs 2 ovuled, the lower ovule 

 abortive; style short; stigmas 2. Fruit a 2 celled 2-seeded samara, 

 winged all around, broadly orbicular. Seeds oblong. (Greek name 

 of the Elm, the fruit of which is very similar.) 



1. P. Baldwinii T. & G. var. crenulata. Hop Tree. Small tree 

 8 to 15 ft. high; glabrous or with a slight pubescence on the inflores- 

 cence and under surface of the leaves; leaves elliptic, obovate or 

 elongated-rhomboidal, rounded or acute at apex, often with abruptly 

 cuneate base, crenulate or almost entire, 1 to 2 J in. long; buds 

 downy; sepals very small; petals '2\ lines long; stamens hairy towards 

 the base; fruit 5 to 6 lines long, a trifle broader, tipped by the per- 

 sistent style. — (P. crenulata Greene.) 



Coast Ranges, not infrequent in certain localities, but probably of 

 restricted range: Mt. Diablo, abundant in Mitchell Canon, the wing 

 emarj^inate at apex; Antioch, the wing abruptly acuminate at apex; 



