10/0 APPENDIX. 



P. 294, after Limnorchis hyperborea, insert: 



za. Limnorchis major (Lange) Rydb. LARGE GREEN ORCHID. 

 Stem stout, 2-6 dm. high. Leaves lanceolate, mostly acute, 5-30 cm. 

 long, 1.5-4 cm. wide; spike dense, 5-15 cm. long; bracts lanceolate, the 

 lower slightly exceeding the flowers; flowers 12-14 mm - long; upper 

 sepal broadly ovate, obtuse, 5 mm. long, the lateral ones ovate-lanceo- 

 late, obtuse, spreading; petals lanceolate, acute, oblique, a little shorter 

 than the sepals; lip 5-6 mm. long, ovate-lanceolate, obtuse; spur almost 

 equalling or somewhat exceeding the lip, distinctly clavate and curved. 

 Greenland to N. Y. and Wis. May-Aug. 



P. 294, after Limnorchis fragrans, add: 



6. Limnorchis graminifolia Rydb. GRASS-LEAVED ORCHID. Very 

 slender, 3-4 dm. high. Leaves narrowly linear, 5-10 cm. long, 3-4 mm. 

 wide; spike short; bracts lanceolate, shorter than the flowers; flowers 

 white, 12-15 mm. long; upper sepal ovate, 4 mm. long, the lateral ones 

 lanceolate, slightly shorter than the upper one; lip lanceolate, obtuse 

 dilated near the base, but not rhombic; spur one- third to one-half longer 

 than the lip, clavate toward the apex, acute. Alaska; Riviere du Loup, 

 Canada. 



P. 294, add the genus: 



7a. PIPERIA Rydb. 



Somewhat leafy-stemmed plants, but the leaves usually near the base 

 and withering at or before anthesis, the stem-leaves reduced and bract- 

 like. Tubers spherical or ellipsoid; flowers greenish or white; sepals 

 and petals i -nerved or very obscurely 3-nerved; upper sepal ovate or 

 lanceolate, erect, the lateral ones spreading, linear to lanceolate, their 

 bases united with the claw of the lip; upper petals free, lanceolate or 

 linear-lanceolate, oblique, but not cordate; blade of the lip linear-lan- 

 ceolate to ovate, obtuse, truncate or hastate at the base, concave but 

 with a longitudinal low ridge in the middle produced by the undulation 

 of the lip, the claw united with the bases of the lower sepals, bordered 

 with an erect margin which connects the lip with the column; anther- 

 cells unusually large for the size of the flower, parallel, opening nearly 

 laterally; stigma a small beak in the angle between the anther-cells; 

 ovary sessile, ellipsoid in fruit. About 10 species, natives of North 

 America. [In honor of Professor C. V. Piper.] 



i. Piperia Unalasch&isis (Spreng.) Rydb. ALASKA PIPERIA. Stem 

 strict, slender, 3-5 dm. high, leafy only near the base; basal leaves 

 oblanceolate, 1-1.5 dm. l n g - 8 ~3 cm - wide; stem-leaves linear-lanceo- 

 late to lanceolate, attenuate, 0.5-1 cm. long; spike long and lax, 1-3 

 dm. long; bracts lanceolate to ovate-lanceolate, one-half to two-thirds 

 as long as the flowers; flowers greenish, distinctly in spirals, 8-10 mm. 

 long; petals and sepals 2-4 mm. long; upper sepal ovate, acutish, the 

 lateral ones oblong-lanceolate, obtusish; petals purplish green, somewhat 

 fleshy, lanceolate, oblique at the base; lip oblong, obtuse, slightly 

 hastately lobed near the base; spur filiform or slightly clavate, a little 

 exceeding the lip, but shorter than the ovary. In damp woods from 

 southern Alaska and Alberta to Cal. and Colo., and on Jupiter River, 

 Anticosti. 



P. 300, after Gyrostachys crnua, insert: 



43. Gyrostachys parviflora (Chapm.) Small. SMALL-FLOWERED 

 LADIES' TRESSES. Stem 2^4 dm. tall, leafy below, minutely pubescent 

 above; blades of the basal and lower cauline leaves broadly linear tc 

 linear-oblong, 4-16 cm. long; spike compact, elongating in age, the 

 bracts not surpassing the flowers; perianth white; lateral sepals lanceo- 

 late, sometimes broadly so, with the base often dilated, about 5 mm, 



