OP ARTS AND SCIENCES. 477 



DoKSTENiA Choconiana. Caulescent, the simple stem a foot 

 high or less, erect from a slender running rootstock, glabrous or with 

 the petioles slightly puberulent : stipules subulate ; leaves thin, glau- 

 cous and glabrous, or the veins beneath somewhat roughened, oblong- 

 lanceolate, acuminate, abruptly cuneate at base by the decurrence of 

 the blade upon the petiole, 2 to 6 inches long, entire (in the smaller 

 specimens) or usually pinnately 7-9-lobed, the deep sinuses mostly 

 rounded and the lobes acute or acuminate : peduncles slender, an inch 

 long or less ; receptacles subhemispherical or turbinate, half an inch 

 broad or less, green, glabrous beneath or nearly so, the margin entire. 

 — In dry stream-beds in the forest at the head of Black River, a 

 branch of the Chocou, Guatemala; March, 1885. 



QuERCUS Sadleriana, R. Brown (Campst), Ann. & Mag. Nat. 

 Hist. 7. 249 (1871). A peculiar white-oak, 4 to 6 feet high: buds 

 oblong, densely silky ; branchlets glabrous : stipules silky ; leaves de- 

 ciduous, broadly oblong or oblong-obovate, acute or acutish, somewhat 

 cuneate or narrower at base, pinnately veined and rather acutely den- 

 tate, 2 to 3 inches long by 1 to 1| broad (or larger, Brown), shortly 

 petiolate, glabrous, tomentulose beneath when young : aments 2 to 4 

 inches long ; bracts silky ; sepals ovate ; stamens about 8 : acorns 

 maturing the first year, sessile or nearly so ; cup shallow, tuberculate, 

 5 or 6 lines broad ; nut oblong, obtuse, about 8 lines long ; stigmas on 

 short spreading styles. — Summit of the Coast Range, Curry County, 

 Oregon {Tliomas Howell, June, 1884) ; Siskiyou Mountains, Del Norte 

 County, California (^T. S. Brandegee, September, 1885). First col- 

 lected by R. Brown in 1865, on the Crescent City trail over the 

 Siskiyou Mountains in Oregon, near the California line. It is a 

 clearly distinct species. Of the other species desci-ibed by him in the 

 article cited, Q. (Erstedtiana is evidently Q. Breweri, Engelm., and 

 his name has the priority. Q. echinoides is probably only a small form 

 of Q. densijlora. What he refers doubtfully to Q. oUongifolia, Torn, 

 is Kellogg's Q. vacciniifolia. His Q. Jacobi, from Vancouver's Island, 

 may be a variety of Q. Garryana, as he suggests ; but specimens in 

 herb. Gray, collected by Lyall on that island, have a deeper, larger, 

 and more scaly cup, and a very peculiar look. It may prove to be 

 distinct. 



NoTTLiA GuATEMALENSis. Pseudobulb vcry small, 1-3-leaved: 

 leaves flat, rather thin-coriaceous, narrowly oblong, 2 to 6 inches long 

 by 6 to 12 lines broad : raceme pendulous, rather loosely many- 

 flowered, 3 inches long including the short peduncle ; bracts small, 

 lanceolate, equalling the somewhat reflexed pedicels : sepals distinct, 



