516 



ADDITIONS. 



Lythuum. 



Vol. I., p. 229 j 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 ; Torr. $ Gr. fl. N. 

 Am. 1. p. 482. L. Salicaria, /3. pubescens, Pursh, fi. 1. 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. I., p. 255 ; after Saxtfraga Pennsylvania, 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 ; Torr. $ 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. This 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. 



