PL ex. thal. 
66. GERANIEiE. 387. Oxalis. 631 
Oxys alba, Rail Syn. 281,* 1 ; Ger. em. 120, 1. 
Trifolium acetbsum vulgare. Park. 746. 
Oxalis Acetosella, Lin. S. P. 620. 
W ood sowr. Sowr trefoil. Stubwort . Alleluja. Sorrel du hois. Cuckoo 
bread. 
Woods; perennial; April and May. 
Root fleshy, horizontal ; leaflets slightly petioled, coloured 
beneath, edge not cut ; scape bracteated above the middle ; 
petals flesh-coloured with red lines ; seeds 2 in each cell. — 
Juice contains much oxalate of potash, which renders it 
gratefully acid, and may be separated by crystallization ; 
leaves in infusion cooling, and make an agreeable whey. 
0. ccerulea. Plant small, rather villous ; petals bluish 
purple. 
Oxys q. Trifolium acetosum vulgare, flore purpureo Merreti, Dillen in 
Raii Syn. 281 y* 2. 
2 . Oxalis strict a. Stiff wood-sorrel. 
Stem upright, branched ; peduncles umbell-bearing, shorter 
than the petioles; leaves ternate, reverse-heartshape; petioles 
half-round ; stipules 0 ; petals blunt ; style as long as the 
interior stamens. 
Oxalis stricta, Lin. S. P. 
Cultivated grounds, naturalized ; annual ; July and Aug. 
Leaves rather bald ; corolla yellow. 
3. Oxalis corniculata. Horn wood-sorrel. 
Stem branched trailing, rooting ; peduncles rather urn- 
belled, shorter than the petioles; leaves ternate, reverse 
heartshape ; petioles stipuled ; styles as long as the interior 
stamens. 
Oxys lutea, Ger. em. 1202. 
Oxalis corniculata, Lin. S. P. 623. 
Oxalis pusilla, Salisb. Tr.Lin. Soc . 2,243. 
yellow wood-sorrel. 
Ruins and dunghills ; naturalized ? annual ; May to Oct. 
Stem roundish, reddish; leaves hairy; stipules growing 
to the petiole ; flowers small ; corolla yellow ; cells of the 
capsules many-seeded. 
Fam. II. 67. HYPERICINEiE. 
Calyx 1-sepaled, 4 or 5-parted; petals 4 or 5, hypogy- 
nous ; stamens hypogynous, many, indefinite, polyadelphous; 
ovary free ; styles 3 to 5 ; fruit many-celled, rarely fleshy 
and 1 -celled, mostly capsular, 3 to 5-celled, 3 to 5-valved; 
