SIMARUBACEAE 441 



Hills and mesas, 50 to 2600 feet : southern Orange Co.; western San Diego Co. 

 South to Lower California. Mar.-Apr. 



Locs. — Arch Beach, Orange Co., ace. Peirson; Bernardo, Abrams 3378; Clevinger Canon, 

 Eamona, Jepson 8508; Witch Creek, Alderson; La Jolla, Jepson 11,862; Pt. Loma, Newlon 339; 

 betw. Dulzura and Campo, J. T. Jloioell 2965. 



Eefs. — Cneoridium dumosum Hook, f.; Baillon, Hist. PI. 4:498 (1873) ; Jepson, Man. 605, 

 fig. 598 (1925). Pitavia dumosa Nutt.; T. & G. Fl. 1:215 (1838), type loc. San Diego, Nuttall. 



3. PTELEA L. 



Deciduous shrubs or small trees. Leaves alternate, pinnately trif oliolate with 

 sessile leaflets. Flowers polygamous or dioecious, small, greenish-white, in axillary 

 paniculate cymes. Sepals, petals and stamens 4 or 5. Ovarj^ 2-celled; cells 2- 

 ovuled, the lower ovule abortive; style short; stigmas 2. Fruit a 2-celled 2-seeded 

 samara, winged all around, broadly orbicular. — Species 3, temperate North Amer- 

 ica. (Greek name of the Elm, the fruit of which is similar.) 



1. P. IjaldwiniiT.&G.var.crenulata Jepson. Hop Tree. Small tree or shrub 

 6 to 18 feet high; herbage glabrous or slightly pubescent; leaflets elliptic, obovate 

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

 base, crenulate or almost entire, 1 to 2% inches long; sepals very small; petals 2 to 

 21/2 lines long; stamens hairy towards the base; fruit straw-yellow, 5 to 8 lines long, 

 a trifle broader, tipped by the persistent style. 



Canon sides and flats in the foothills, 100 to 1500 feet : inner Coast Range from 

 Shasta Co. to Contra Costa Co. ; Sierra Nevada foothills from Tehama Co. to Mari- 

 posa Co. Apr.-May. 



Field note. — This species is frequent in the canons on the north side of Mt. Diablo, in Donner 

 Canon or more especially on the slopes of Mitchell Canon. In that region the shrubs in the main 

 bear staminate flowers only or pistillate flowers only, but there are always in these flowers vestiges 

 of the complementary sexual organs. 



Locs. — Coast Eanges: Coram, Shasta Co., BlanTcinship ; Middle Creek sta., w. Shasta Co., 

 Heller; Lower Lake, Lake Co., C. F. Baker 2985 ; Antioch, Davy 909 ; SummervUle, Contra Costa 

 Co., Chesnut ^ Drew; Donner Canon, Mt. Diablo, Jepson 7603a; upper Marsh Creek, e. Contra 

 Costa Co., Jepson. Sierra Nevada foothills : Tuscan Sprs., Tehama Co., Annie Alexander; Auburn, 

 Sonne; Angels Camp, Calaveras Co., Davy 1491. 



Eefs.— Ptedea baldwinii T. & G. Fl. 1 :215 (1838), type loc. St. Johns, e. Florida, Baldwin. 

 Van CRENULATA Jepson, Fl. W. Mid. Cal. 249 (1901), ed. 2, 248 (1911), Man. 605, fig. 599 (1925). 

 P. crenulata Greene, Pitt. 1:216 (1888), which rests on P. angustifolia B. & W. Bot. Cal. 1:97 

 (1876), "Clear Lake and on Mt. Diablo"; not P. angustifolia Benth. (1839). P. brevistylis 

 Greene, Contrib. U. S. Nat. Herb. 10:73 (1906), 'California", G. B. Vasey. P. ovalifolia Greene, 

 I.e., "California", G. E. Vasey. P. cinnamomea Greene, I.e. 74, "vicinity of lone", Braunton. 

 P. bullata Greene, I.e. 75, "Anderson's ranch. Lower Lake, Lake Co.", Agnes Bowman. P. cyclo- 

 loina Greene, I.e. 75, mts. "near Mariposa", Congdon. 



SIMARUBACEAE. Quassia Family 



Shrubs or trees similar to Rutaceae, but the leaves without dots and the wood 

 and bark very bitter. Leaves alternate. Flowers perfect or unisexual, regular. 

 Sepals and petals 3 to 5. Disk prominent, 10-lobed ; stamens 6 to 10. Carpels mostly 

 2 to 5, distinct or united, superior. Fruit in ours drupe-like or forming a samara. — 

 Genera 27, species 125, all continents save Europe. 



Bibliog. — Desfontaines, E. L., Sur un nouveau genre d'arbre, Ailanthus glandulosus (Mem, 

 Acad. Eoy. Sci. Paris 1786:265-271, pi. 8,-1788). Bessey, C. E., The chimney-shaped stomata 

 of Holacantha emoryi (Bull. Torr. Club 31:523-527,-1904). Small, J. K., Simarubaceae in 

 N. Am. Fl. 25:227-239, — 1911. Swingle, W. T., The early European history and the botanical 

 name of the Tree of Heaven, Ailanthus altissima (Jour. Wash. Acad. Sci. 6:490-498, — 1916). 



Leaves large, odd-pinnate; fruit a samara - 1- Ailanthus. 



Leaves reduced to scales; fruit drupaceous 2. Holacantha. 



