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Family 3. LYTHRARIZ. 
Calyx tube not adnate to the ovary. Sta- 
mens inserted with the petals, and of definite 
number; anthers introrse Ovary free, with 
central placente, compound of carpidia; ovules 
«; style 1. 
1, Lythrum L. LooSE-STRIFE, 
Calyx tubular, 8-12-costate; limb 8-12-den- 
tate; dentitions alternating in size. Petals 4-4,. 
opposite the smaller dentitions of the calyx. 
Stamens 8-12. Ovary 2-celled, covered by the 
persistent calyx. Flowers purple. 
1. L.auarum Pursh.—2. Tamalpais. Sum- 
mer. 
Orver 2. ROSIFLORA. Calyx lobes 
imbricate in -estivation, as many as the per- 
igynous petals. Ovaries several, in different 
degrees of consolidation, in rare cases reduced 
to a single one, the eccentric position of which 
indicates the abortion of its fellows. 
Family 1. AMYGDALACEZ, 
Calyx free, 5-cleft, deciduous. . Petals 5, 
convolute in estivation. Ovaries almost always 
reduced to one, 1-celled, 2-ovulate. Fruit a 
drupe, by abortion generally 1-seeded. Leaves 
alternate, stipulate; stipules caducous. 
