532 OXALIDACEAE (WOOD SORREL FAMILY) 



6. L. CATHARTICUM L. Delicate annual, 1-2 dm. high, corymbosely branched ; 

 leaves small (3-8) mm. long), elliptic-oblanceolate, obtuse. Old fields, etc., 

 N. S. and Out. (Adv. from Eu. ) 



6. L. sulcatum Riddell. Annual; branchlets grooved; leaves linear or 

 subulate, commonly with dark glands in the place of stipules ; sepals ovate- 

 lanceolate, conspicuously pointed, glandular-ciliate. Dry or sandy soil, e. 

 Mass, and Vt. to Man., and southwestw. 



7. L. stratum Walt. Erect from a slightly decumbent base ; flowers small, 

 somewhat crowded on the stiffish spreading-ascending angulate branches. Wet 

 woods, sandy shores, etc., Mass, to Ga., Mo., and Tex. The fruiting plant has 

 much the habit of Lechea. 



8. L. virgini^num L. Tall, 3-5 dm. high; stem and branches subterete; 

 leaves thin, deep green, elliptic-lanceolate or narrowly oblong, the lower spatu- 

 late and often opposite, chiefly spreading-ascending ; flowers scattered on a few 

 often subsimple branches ; sepals ovate, short-pointed, nearly or quite entire ; 

 capsule depressed-globose. Dry woods and barrens, s. Me. to Ga., Ky., and s. 

 Ont. 



9. L. medium (Planch.) Britton. Leaves of firm texture, acute, erect or 

 ascending ; pedicels short (1-7 mm. long); the inner sepals commonly erose or 

 somewhat glandular-ciliolate j capsule depressed-globose. Dry or sandy soil, 

 Vt. to Ont. and Mich., southw. and southwestw. 



10. L. floridanum (Planch.) Trel. Similar to the preceding, perennial; 

 leaves firm, erect, pale, narrowly lanceolate to oblong, acute ; branches few, 

 slender, arched-ascending ; sepals glandular-ciliate on the covered margins ; 

 capsule ovoid, pointed. Bogs and sterile soil, e. Mass, to Fla. 



2. MILLEGRANA Adans. ALL-SEED 



Sepals (toothed), petals, stamens, and styles 4. Pod of 4 almost 2-celled 

 carpels, each carpel 4-seeded. Seeds without albumen. A minute annual 

 with filiform simple stems or forking branches, opposite leaves, and tiny corym- 

 biform cymes. Corolla fugacious. (Name from mille, thousand, and granum, 

 seed.) RADIOLA Roth. 



1. M. RAD^OLA (L.) Druce. The only species. (Eadiola Linoides Roth.) 

 Ditches, Louisburg, Cape Breton (Macouri). (Nat. from Eu.) 



OXALIDACEAE (WOOD SORREL FAMILY) 



Plants with regular 5-merous W-15-androus flowers. Ovary superior, 

 ^-celled, the carpels 2-oo -ovuled, usually distinct above, loculicidal. Ours 

 low herbs with sour watery juice and delicate impunctate palmate alternate or 

 radical leaves with 3 obcordate leaflets. 



1. 6XALIS L. WOOD SORREL 



Sepals 6, persistent. Petals 5, sometimes united at base, withering after 

 expansion. Stamens 10, usually monadelphous at base, alternately shorter. 

 Styles 5, distinct. Pod prismatic, cylindric, or awl-shaped, meinbrana<v<>us : 

 valves persistent, being fixed to the axis by the partitions. Seeds pendulous 

 from the axis, anatropous, their outer coat loose and separating. Embryo large 

 and straight in fleshy albumen ; cotyledons flat. Several species produce small 

 peculiar flowers, precociously fertilized in the bud and particularly fruitful ; and 

 the ordinary flowers are often dimorphous or even trimorphous in the relative 

 length of the stamens and styles. (Name from <5rfs, sour.) 



N. B. In this genus the figures are on the scale of $. 



