Undescribed Plants from Guatemala. XI
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... out Early Journal Content at http://about.jstor.org/participate--jstor/individuals/early-journal--content. JSTOR is a digital library of academic journals, books, and primary source objects. JSTOR helps people discover, use, and build upon a wide range of content through a powerful research and teaching platform, and preserves this content for future generations. JSTOR is part of ITHAKA, a not--for--profit botanists, who are kindly assisting in the elaboration of the plants of the series. Capparis Heydeana (Subgen. CYNOPHALLA Eichl. in Fl. Brasil.)-Glabrate, axils eglandular: stipules minute; leaves obovate-oblong to elliptical-oblong (4-5 x I I iu), acuminate, midrib excurrent, base acute, canaliculate petiole an inch or more long: flowers from axils of reduced leaves composing terminal short racemes; pedicels stout, exceeding petioles, apex incrassate: sepals oblong (8-io'), obtuse: petals obovatespatulate (2-2 xk " ): stamens scarcely as long, 6; carpophore equalling petals, ovary 2-locular: glands of disc distinct, triangular. -Remarkable in the genus by the large petals and in the sub-genus by the few stamens. Prof. Radlkofer, to whom this plant was submitted for comparison, calls attention to the accordance of its anatomical characters with those of Cynophalla; he observes the presence of soluble crystals in the cells of the upper and lower epidermis of the leaf such as occur in C. Cynoplhallophorus L., C. polyantha, Tr. et Planch. and other allied species (cf. Vesque in Ann. sc. nat. 6me Ser. I03, t. xiii).-Tree 30_45ft high, mountains overhanging Lake Ayarza, Depart. Jalapa, alt. 8,400ft, Sept. i892, Heyde & Lux, (ex PI. Guatemal. qu. edid. J. D. S. 4, II2). Xylosma Quichense.-Arborescent (IO-I 5ft) unarmed, pubescent: leaves oblong-elliptical (3,2-5 X I-Iin), contractedacuminate, base obtuse, upper surface shining and excepting nerves smooth, incurved-serrate, shortly petiolate: racemes solitary or 2-3-fasciculate, simple or paniculate, 3-6 times i5-Vol. XVIII-No. 6. Var. subalpina.-Glabrous excepting racemes, branchlets red and glandular-lenticellate: leaves ovate-elliptical, shorter, thicker: bracteoles colored, semi-sheathing, glandular-denticulate, subequalling pedicels.-Forests near El Jute, Depart. Quiche, alt. ioooof, Apr. i892, Heyde & Lux, (ex PI. cit. 3, o64). ARENARIA ALSINOIDES Willd., var. ovatifolia. -Leaves pilose, ovate-acuminate, base rounded or cuneate, subsessile: petals twice larger (5') than sepals: seeds numerous (i8-30), punctulate, red.-Volcan de Agua, Dept. Zacatepequez, alt. iooooft, June i892, Dr. W. C. Shannon, U. S. A., (ex.