196 OXALTDE^. (WOOD-SORREL FAMILY.) 



P. Eiidliolieriaiiuiii, Fcnzl. 2/ Sa'udihan TchicMTca .3 to .5, 

 velvety-pubescent ; stems thick, erect, simple or sparingly branched. 

 Root leaves round-hrart-sliaped or reniform, crenate, the upper stem 

 leaves 3-5-parted into incised lobes, the middle one rhc^mboid, trifid. 

 Peduncles long, the terminal one 5-15-flowered. Calyx lobes linear-lanceo- 

 late, acute; the upper pair of petals purple, .03 long, thrice as long as 

 calyx, the lower three rudimentary, one-third to one-half as long as 

 calyx, pale, entire or bifid — Summer — Rocky places ; Amanus and 

 northward. 



Order XXVI. OXAL.IDE.*:. (Wood-Sorrel Family). 



Ilcrhs with sou?' juice, trefoil leaves, and regular^ 

 symmetrical, liypogynous, h-merous, somewhat monadel- 

 phous 10-lb-androiis flowers, imhricated calyx, convolute 

 petals, 5 distinct styles, and a ^-celled, several-seeded cap- 

 ,^ul0 — Anthers with 2 slits. Placenta central. 



OXALIS, L. Wood Sorrel. Hliammddh. 



Sepals persistent. . Stamens 10, the outer shorter than the inner. 

 Capsule loculicidal. Seeds with fleshy aril, separating elastically from 

 tip ; shell crustaceous ; albumen fleshy ; embryo straight — Stipuled 

 herbs. 



O. coriiiculata, L. 2^ .2 to .4 ; root not stoloniferous ; stems 

 diffused, rooting at base. Stipules oblong, adnate to petiole ; leaflets 

 obcordate. Peduncles with 2-3, yellow, .01 broad flowers ; pods .015 

 long, .003 broad — Spring and summer — Moist places ; common. 



Order XXVII. RUTACEiE. (Rue Family). 

 Plants, usually with glandular-dotted leaves, a heavy 

 odor due to an acrid, aromatic, volatile oil, herinaphrodite 

 Z-ii-merous, hypogynous floioers, stamens as many or twice 

 as many as sepals^ (rarely more) ovary with as many 

 carpels as calyx-lohes, raised on a prclongation of the dish 

 — Leaves stipuled or exstipulate. (Jalyx imbricated or open 

 in the bud. Cells 2 4-00 -ovnled, ovules anatropous, ascending, 

 inserted on a central placenta. Stjle 1, arising between 

 the carpels; stigma simple. Cells of capsule splitting down 

 their inner sixle, sometimes free. Albumen fleshy, embryo 

 curved m axis of albumen, or nearly straight, radicle superior. 



* Flowers irregular. Endecarp separating elastically from sarcocarp. 



1. DICTAMNUS Petals 5. Stamens 10. Flowers panicled, purple, showy. 



* * Flowers regular. Endocarp separable from sarcocarp. 

 t Leaves exstipulate, glandular dotted, strong-scented. 



2. RUTA, Petals 4. Stamens 8. Flowers corymbed, yellow. 



3. nAPLOPHYLLUM. Petals 5. Stamens 10. Flowers corymbed, yellow. 



t t Leaves stipuled, not glandular dotted, nor strong-scented. 



4. TETRADICLIS. Petals and stamens 4. Dwarf herbs with minute, spiked flowers. 



5. PEGANUM. Petals 5. Stamens 12-15 Flowers .03 broad, white, terminal. 



