POLYGONE^E. 81 



branches: herbage glabrous, deep green, reddening in age: leaves 

 obovate- to spatulate-oblong, 13 lines long, obscurely pinnate- veined, 

 sharply serrate above the middle: stipules setaceous, lacerate or sub- 

 entire: glands of involucre minute, transversely oblong, reddish and with 

 narrow 2 3-lobed or entire white or rose-colored appendages: seed 

 quadrangular, the length scarcely twice the breadth, the sides more or 

 less rugose-pitted, the angles somewhat prominent. Not common. 



7. E. occidentalis, Drew. Habit of the last, but the glabrous her- 

 bage of a dull rather yellowish green: leaves oval or broadly oblong, 

 only slightly unequal, very obtuse at each end, serrate above the middle 

 or quite entire, mucronulate, 24 lines long; stipules setaceous-lacerate: 

 appendages of involucre crenate-lobed: seed % line long, whitish, the 

 /aces more or less distinctly sinuate-rug ost between the rather prominent 

 angles. On Mt. St. Helena. 



8. E. rugulosa, Greene. Wholly prostrate and very closely 

 depressed, rather succulent, much branched and in age forming a very 

 close mat a foot broad or more : herbage glabrous, pallid and glauces- 

 cent: leaves veinless, sharply serrate or almost entire: stipules, 

 involucre, etc., as in the preceding: seeds whitish, finely transverse- 

 rugose between the scarcely prominent angles. Native of the southern 

 extremity of the State, but well established along our railroads. 



9. E. macula! a, L. Prostrate, puberulent or hairy: leaves oblong- 

 linear, very oblique at base, senulate upward, 46 lines long, usually 

 with a brown -red spot in the centre; stipules lanceolate, nmbricate: 

 glands of the small involucre minute, with narrow slightly crenate red- 

 dish appendages: pods acutely angled, puberulent: seeds % line long, 

 sharply 4-angled and with about 4 shallow grooves across the concave 

 sides. An immigrant from the Mississippi Valley; not rara 



OEDEB XXXIL POLYGALE>. 



Herbs or shrubs often with milky juice. Leaves simple, entire, exstip- 

 ulate. Flowers, except as to the pistil, simulating the papilionaceous; 

 but the affinities apparently with certain allies of Euphorbia. We have 

 but the genus 



POLYGrlLA, Diosc. Ours low undershrubs with alternate leaves and 

 few irregular flowers in terminal cymes. Sepals 5, two larger than the 

 others, lateral and petal-like. Petals 3, joined to each other and to the 

 stamen-tube, the middle one hooded above and beaked or crested. 

 Stamens 68, unequal, monadelphous, forming a sheath, this open on 

 one side; anthers 1-celled, opening at top. Ovary short, 2-celled; 

 ovules solitary, pendulous, style long, curved dilated. Capsule mem- 



