492 CELASTRACEAE. Vol. II. 



4. Euonymus europaeus L. Spindle- 

 trc'c. I'ig. 2800. 



Euonymus europaeus I.. Sp. I'l. 197. 1753. 



A glabrous shrub, 3-9 liigh, resembling the 

 preceding species. Leaves oblong to ovate-lanceo- 

 late, acuminate, crenulate ; peduncles mostly less 

 than l' long, stouter; cymes 3-7-flowered ; flow- 

 ers greenish-yellow or yellowish-white, about 5" 

 broad; petals 4 (rarely 5), oblong or obovate ; 

 capsule smooth, deeply 4-Iobed. 



Escaped' from cultivation to copses and roadsides, 

 Virginia, New York and' New Jersey. June. Arrow- 

 beam. Prick-timber. Prickwood. Cat-tree. Pegwood. 

 Pi-ncushion-shrub. Skiver- or skewer-wood. Witch- 

 wood. Louseberry. Gatteridge. Butchers' prick-tree. 

 Gaiter- or Gatten-tree. European dogwood. 



2. PACHYSTIMA Raf. Am. Month. Mag. 2: 176. 1818. 

 Low branching glabrous shrubs, with corky branches, opposite coriaceous evergreen 

 leaves, and small axillary, solitary or clustered, perfect brownish flowers. Calyx-lobes 4, 

 broad. Petals 4, spreading. Stamens 4, inserted beneath the disk; filaments longer than the 

 anthers. Ovary immersed in the disk, 2-celled; ovules 2 in each cell, erect: style very short; 

 stigma slightly 2-lobed. Capsule oblong, compressed, 2-celled, at length loculicidally dehis- 

 cent, i-2-seeded. Seeds oblong with a wdiite many-lobed aril at the base. [Greek, thick stigma.] 



Two species, natives of North America. The 

 typical P. Myrsinifes (Pursh) Raf. occurs in the 

 Rocky Mountains. 



I. Pachystima Canbyi A. (jray. 



Canby's Mountain Lover. 



Fig. 2801. 



P. Canbyi A. Gray, Proc. Amer. Acad. 8 : 623. 1873. 



A shrub 4'-i2' high, with decumbent rooting 

 branches. Leaves linear-oblong, or slightly 

 obovate, 3"-i2" long, iA"-2" wide, obtuse at 

 each end, very short-petioled, pale green, ser- 

 rate, the margins revolute; peduncles 1-3- 

 flowered, 2-bracted below the middle ; pedicels 

 slender, shorter than the leaves, 2-bracted 

 near the base ; calyx-lobes oval, about equalling 

 the petals ; capsule oblong, about 4" long and 

 2" in diameter, dehiscent at maturity. 



On dry exposed rocks, mountains of Virginia 

 and West Virginia. Rat-stripper. .^pril-May. 



3. CELASTRUS L. Sp. Tl. 196. 1753. 



Shrubs, mainly climbing, with alternate thin deciduous leaves, and terminal or axillary, 

 racemose or paniculate, small dioecious or polygamous flowers. Calyx 5-lobed. Petals S, 

 inserted under the disk. Stamens in the sterile flowers 5, inserted at the sinuses of the 

 5-lobed disk. Ovary inserted on the disk, 2-4-iobed. 2-4-celled; style thick; stigma 2-4-lobed; 

 ovules 2 ill each cell, erect. Capsule 2-4-celled, loculicidally dehiscent into as many valves. 

 Seeds 1-2 in each cell, enclosed in a scarlet aril; embryo straight; endosperm fleshy; cotyle- 

 dons flat, coriaceous. [Greek name of some evergreen tree.] 



About 30 species, i in continental North America, a few in tropical America, numerous in 

 eastern Asia, several in Australia and Madagascar, the following typical. 



