CHENOPODIACEAE. 121 



solitary or clustered in the upper axils. Calyx 5-parted or 5-cleft, the segments 

 in fruit enclosing the utricle. Stamens 5. Styles usually 2, short. Pericarp 

 separating from the seed. Embryo coiled into a flat spiral. Endosperm want- 

 ing or very little. [In honor of Jacopodi Dondi, Italian naturalist of the 

 fourteenth century.] About 50 species, of wide geographic distribution. Type 

 species: Chenopodium altissimum L. 



Leaves 2-5 cm. long, elongated-linear ; calyx-lobes strongly keeled. 1. D. Unearis. 

 Leaves 1-1.5 cm. long, narrowly oblong ; calyx-lobes inflexed, not 



keeled. 2. D. fruticosa. 



Leaves 2-5 mm. long, oblong ; calyx-lobes inflexed, rounded. 3. D. insularis. 



1. Dondia linearis (Ell.) Heller, Cat. N. A. PI. 3. 1898. 



Salsola linearis Ell., Bot. S. C. & Ga. 1: 332. 1821. 

 Dondia carinata Millsp. Field. Mus. Bot. 2: 297. 1909. 



Usually annual, sometimes perennial ; stem erect, strict, 3-10 dm. tall, pale 

 green or nearly white, the branches slender, very leafy, erect-asending or some- 

 times recurved. Leaves of the stem linear-subulate, 2-5 cm. long, those of the 

 branches much shorter, somewhat 3-angled, lanceolate-subulate, widest just 

 above the base, the upper surface flat; calyx-lobes glaucous, acutely keeled or 

 almost winged; seed orbicular, horizontal, black, shining, 1-1.5 mm. broad. 



Salina borders and maritime rocks, South Bimini, New Providence, Andros, 

 Eleuthra, Riding Rocks, Inagua, islands of the Cay Sal Bank : Const of eastern 

 North America; Cuba. Referred by Mrs. Northrop to D. fruticosa (Forsk.) North- 

 rop. TALL SEA-BLITB. 



2. Dondia fruticosa (L.) Northrop, Mem. Torr. Club. 12: 35. 1902. 



Chenopodium fruticosum L. Sp. PI. 221. 1753. 



Suaeda intermedia S. Wats. Proc. Am. Acad. 14: 296. 1879. 



Dondia intermedia Heller, Oat. N. A. PI. 3. 1898. 



Dondia Wilsonii Millsp. Field Mus. Bot. 2: 297. 1909. 



Perennial, woody, glabrous or nearly so, somewhat glaucous, much branched, 

 8 dm. high or less, the branches leafy, ascending. Leaves subterete, 1-1.5 cm. 

 long, the upper little shorter than the lower; calyx-lobes rounded on the back, 

 inflexed; seed red-brown or black, 1 mm. broad. 



Margins of salt pans, South Caicos Island : Western United States ; Cuba ; 

 Virgin Gorda ; alkaline regions of Europe, Asia and Africa. BUSHY SEA-BLITE. 



The plant is much out of its general range on South Caicos ; our specimen was 

 referred to D. fruticosa by Standley (N. A. Fl. 21: 91). 



3. Dondia insularis Britton, Bull. N. Y. Bot. Gard. 4: 138. 1906. 



Perennial, shrubby, much branched, 3 dm. high or less, glabrous, glaucous, 

 the branches divaricately ascending. Leaves approximate, oblong, thick and 

 fleshy, 2-5 mm. long, 1.5-2 mm'.' thick, obtuse, narrowed to a subsessile base ; 

 flowers axillary to the upper leaves, about 2.5 mm. broad; calyx-lobes ovate, 

 obtuse, rounded on the back; filaments shorter than the calyx; seed vertical, 

 black, shining, 1 mm. long. 



In salinas, Grand Turk Island and Ambergris Cay : Cuba ; Santa Lucia. 

 ISLAND SEA-BLITE. 



4. SALICOBNIA L. Sp. PI. 3. ' 1753. 



Fleshy glabrous herbs with opposite terete branches, the leaves reduced to 

 mere opposite scales, the flowers sunken 3-7 together in the axils of the upper 

 ones forming narrow terminal spikes, perfect or the lateral ones staminate. 

 Calyx obpyramidal or rhomboid, fleshy, 3-4-toothed or truncate, becoming 



9 



