APPENDIX. 1045 



P. 179, after Scirpus robustus, insert: 



iga. Scirpus Fernaldi Bicknell. FERNALD'S BULRUSH. Slender, 

 rather pale green, the sharply three-angled culms 4-8 dm. high; leaves 2-6 

 mm. wide, slenderly attenuate, the longer ones often surpassing the culms; 

 primary involucral leaf erect, mostly 1.5-2 dm. long; spikes rather pale, 

 short-ovate or finally broadly ovate, 1-1.5 cm. long, 1-3 in a sessile cluster 

 or stipitate, and 1-5 borne on slender, stiffly flexuous or crinkled, wiry, 

 diverging peduncles 2-7 cm. long; scales finely close-puberulent, the lower 

 ones often somewhat spreading, becoming bifid and finally lacerate, the 

 midvein excurrent in a recurved awn 3-12 mm. long; achene yellowish 

 brown and shining, broadly truncated, obovoid-cuneate, 2.5-3 mm. long 

 and broad, almost equally trigonous or slightly depressed-trigonous with 

 rounded angles or the dorsal swelling more or less umbonate, short- 

 mucronulate; bristles fugacious, shorter than or equal to the achene. 

 Mt. Desert, Me., shore of Somes Sound with 5. paludosus, Aug. 20, 1898. 



igb. Scirpus paludosus A. Nelson. Low MARSH BULRUSH. Similar to 

 S. robustus Pursh, but lower and more slender, with shorter, narrower 

 leaves and more densely clustered, sessile, mostly ovate or ovate-oblong, 

 dark brown spikes; culms 1.5-6 dm. high, stiff and often very slender, 

 usually growing in close colonies, the leaves 1-4 mm. wide. Resembles 

 5\ campestris Britton, of the prairie region, but the spikes are much 

 darker, the achenes more truncate-obovate and more bluntly angled. 

 From Can. and New Eng. to N. J. and at alkaline inland stations, flower- 

 ing from 2-4 weeks earlier than S. robustus. 



No. 24, for " Scirpus microcarpus Presl ", read " Scirpus rubrotinctus 

 Fernald." 5". microcarpus occurs only on the Pacific slope. 



P. 1 80, at end of Scirpus, add: 



30. Scirpus atrocinctus Fernald. BLACKISH WOOL-GRASS. Similar to S. 

 cyperinus L., S. Eriophorum Michx., but the culm slender, about 1.5 mm. 

 thick at the top, the bases of the involucral leaves black or nearly so; 

 inflorescence loose and ample with the spikelets pedicelled, or these in a 

 subcapitate cluster; scales greenish black; bristles light brown or olive- 

 brown. In wet places, Newf. to Manitoba, Saskatchewan, Conn., Penn. 

 and Iowa. 



For " Scirpus cyperinus Eriophorum " read " Scirpus Eriophorum 

 Michx." The plant proves to be specifically distinct from *$". cyperinus and 

 from the foregoing. 



P. 188, after Scleria pauciflora, insert: 



Scleria ciliata Michx. HAIRY NUT-RUSH. Resembles Scleria pauciflora, 

 but is usually stouter, 3-6 dm. high, pubescent; bracts of the flower-clus- 

 ters ciliate; achenes subglobose to globose-ovoid, 3 mm. long, acute, 

 roughened by short ridges or projections; hypogynium a narrow obtusely 

 3-angled border supporting 3 tubercles, these often 2-lobed. In pine 

 lands, Va. to Fla., Mo. and Tex. Also in the W. I. June-Sept. 



P. 229, after Arisaema triphy'lluin, insert: 



la. Arisaema Stewardsonii Britton, n.sp. STEWARDSON BROWN'S INDIAN 

 TURNIP. Dark green, 3-6 dm. high. Leaf-segments 3, lanceolate, acu- 

 minate, thin, narrowed at the base, shining on both sides, 4-20 cm. long, 

 spathe about as long as its peduncle, strongly fluted, green with white 

 stripes, the dilated part acuminate; spadix slender, blunt; fruits 8-10 mm. 

 in diameter. In wet woods, growing among Sphagnum, eastern Penn. 

 Differs from related species by its fluted spathe and shining leaves. 

 Type from Tannersville, Penn., collected by Stewardson Brown, E. P. 

 Bicknell and N. L. Britton, July 4th, 1901. 



P. 248, after Juncus tenuis, insert: 



na. Juncus interior Wiegand. INLAND RUSH. Plants 5-10 dm. tall, 

 light green. Leaves basal ; blades about one-third the length of the scape, 



