420 Chenopodiaceae Chenopodium 



Europas. Verh. Naturf. Ges. Basel 41 : 77-104. 1930. Nomenklatorische 

 Bemerkungen zu einigen Chenopodien. Ostenia (Festschr. fur Cornelius 

 Osten), Montevideo, 1933: 98-101. 1933.] 



Plants with glandular pubescence, more or less aromatic; embryo an incomplete ring. 



Flowers glomerate, without pubescence; glomerules in bracteate or almost naked 



spikes (continuous or interrupted) ; perianth more or less fused; stigmas 3 or 4. 



Sect. Ambrina (Spach) Hook. f. 



Spikes mostly leafy; calyx lobes slightly keeled; seed mostly horizontal, reddish 



brown, about 0.5 mm, with prominent wavy lines; leaves 4-18 cm long, 



lanceolate, coarsely toothed 1. C. ambrosioides ssp. eu-ambrosioides. 



Spikes mostly leafless, more or less elongated; calyx lobes not keeled; seed to 0.8 



mm la C. ambrosioides ssp. eu-ambrosioides var. anthelminticum. 



Flowers solitary, strongly glandular pubescent, sessile in open divaricate cymes, these 



in loose panicles; perianth fused only in lower part; stigmas 2; seed horizontal 



or vertical, dark brown, 0.5-0.7 mm; leaves ovate or oblong, pinnately lobed to 



pinnate, lobes or leaves angled, obtuse. Sect. Botryoides C. A. Mey..2. C. Botrys. 



Plants not glandular or aromatic, sometimes with a rank or heavy odor; pubescence 



frequently more or less mealy; embryo a complete ring. 



Seeds vertical or the terminal ones occasionally horizontal. 



Seeds vertical (rarely horizontal) ; styles filiform, one fourth to half as long as 



the diameter of the utricle. 



Flowers in glomerules (10 mm in diam.), densely capitate; calyx very fleshy and 



bright red, becoming red (crimson) and berrylike in fruit; seed with slight 



margin, blackish brown, dull, 0.8 mm; leaves at base hastate. Sect. Eublitum 



Moq 3. C. capitatum. 



Flowers spicate, not succulent in fruit; perianth fused to nearly the middle; 

 stigmas 2 or 3, very long; seed almost spherical, erect (rarely horizontal), 

 with rounded margin, blackish brown, almost smooth, 1.5 mm; leaves bright 

 green, 5-12 cm long, triangular -hastate and acute, almost entire; perennial. 

 Sect. Agathophyton (Moq.) Hook. f. (See excluded species no. 205, p. 1043.) 



C. Bonus-Henricus. 



Seed vertical and horizontal in the same inflorescence; flowers sessile, densely 

 glomerulate, the glomerules axillary and terminal, simple or paniculate; 

 perianth with (3) 4 or 5 separate tips, these incompletely enclosing the fruit 

 and not keeled; stigmas short; seed dark brown, shiny, margin slightly keeled, 

 almost smooth, 0.6 mm; leaves on short petioles, pale, white-mealy beneath, 

 oblong to oblong-ovate, mostly obtuse, cuneate at base, 1-4 cm long, coarsely 



toothed; annuals. Sect. Pseudoblitum Hook, f 



4. C. glaucum ssp. eu-glaucum. 



Seeds all horizontal; style branches short; perianth 5-tipped, herbaceous, green, 

 fused to a varying degree, mostly keeled, sometimes winged; stigmas 2. Sect. 

 Chenopodia C. A. Mey. 

 Seeds with characteristic alveolar depressions, black. 



Seed 1 mm in diam., shiny, with surface markings less prominent towards 

 margin; tips of perianth with a narrow, strongly winged keel; leaves small, 

 ovate-deltoid, the strongest tooth at about the middle of the leaf, rounded at 



either end, upper leaves cuspidate 5. C. Berlandieri ssp. Zschackei. 



Seed larger (2 mm max.), flat, with small, narrow radial canals, often promi- 

 nently developed; flowers densely glomerate, in loose foliaceous spikes; 

 perianth tips fused to middle. 

 Leaves with 1 or 2 teeth in the lower half, otherwise irregularly toothed, large 

 (7x4 cm max.), broadly deltoid, acuminate, mucronate. .6. C. Bushianum. 



Leaves with more teeth in the lower half, the teeth more acute 



Ga. C. Bushianum f . acutidentatum. 



Seeds with other markings. 

 Leaves mealy. 



