516 ADDITIONS. Ltthrum. 



Vol. I., p. 229 ; after Lythrum Hyssopifolia, add : 



2. Lythrum Salicaria, Linn. Common Purple Loosestrife. 



Leaves lanceolate, cordate at the base ; flowers nearly sessile, whorled, in a long spike ; 

 petals 6 - 7 ; stamens twice as many as the petals. — Linn. sp. (ed. 2.) 1. p. 640 ; Engl, 

 hot. t. 1061 ; DC. prodr. 3. p. 82 ; Hook. fl. Bor.-Am. 1. p. 219 ; Turr. ^ Gr. ft. N. 

 Am. 1. p. 482. L. Salicaria, /3. pubescens, Pursh, fl. \. p. 334. 



Stems branching, 3-5 feet high, quadrangular, erect. Leaves 2-4 inches long, opposite, 

 often a little pubescent on the veins, the upper ones reduced to bracts. Spikes terminal, 4-5 

 inches long ; the flowers large and showy, mostly hexamerous. Calyx striate. Petals bright 

 purple, oblong-cuneiform, twice the length of the calyx. Stamens included ; the alternate 

 ones longer. Style exserted. Capsule oblong, surrounded by the tube of the calyx. Seeds 

 obovoid-oblong. 



Borders of Murderer's Creek, Orange county, where it occurs in many places for several 

 miles, and is apparently native {Mr. M. B. Halsted). Fl. June - July. Our plant is in 

 every respect like the European L. Salicaria. 



Vol. L, p. 255 ; after Saxifraoa Pennsylvanica, add : 



3. Saxifraga aizoides, Linn. Yellow Mountain Saxifrage. 



Stems cespitose, leafy ; leaves linear, more or less ciliate, slightly mucronate, thick ; 

 flowers panicled or sometimes solitary; sepals ovate-oblong; petals oblong, yellow, a little 

 exceeding the calyx ; stigmas depressed ; capsule thick, as long as the styles ; seeds ovoid- 

 triquetrous, minutely rugose. — Linn. sp. pi. (ed. 2.) 1 . p. 576 ; Engl. hot. t. 39 ; Seringe 

 in DC. prodr. 4. p. 47 ; Hook. fl. Bor.-Am. 1. p. 255 ; Terr. ^ Gr. fl. N. Am. 1. p. 565. 



Stems numerous, 2-4 inches long, spreading. Leaves 4-6 lines long, crowded at the 

 base, scattered above. Flowers few in a loose panicle. Pedicels 4-8 lines long. Calyx 

 adherent to the base of the ovary ; the sepals obtuse. Corolla yellow dotted with orange. 

 Stamens 10 : filaments and anthers yellow. Capsule roundish-ovoid, abruptly pointed with 

 the persistent styles. 



Wet rocks, Annsville, Oneida county, on the east branch of Fish creek {Mr. Vasey and 

 Dr. Knieskern). Fl. June. Tliis interesting little plant -has been nowhere found in the United 

 States except in the locality here given. In the northern parts of Canada, and in Arctic 

 America, it is not uncommon. 



