POLYGONACEAE. 133 



arctic swamps from Greenl. and Alaska to N. H. and Colo. ; also Europe 

 and Asia. — Alt. 8000-12,000 ft. — Alpine Tunnel; Grand Lake; Robinson; 

 Seven Lakes ; Little Kate Basin, La Plata Mountains ; West Spanish Peak ; 

 Cameron Pass ; Indian Creek Pass ; White River Plateau ; Gray's Peak ; 

 North Park; Eldora to Baltimore; Beaver Creek; Cameron Pass; Gore 

 Pass; Graymont. 



7. TINIARIA Reichenb. False Buckwheat. 



Outer sepals merely keeled at maturity. T. Convolvulus. 



Outer sepals developing conspicuous wings. T. scandens. 



1. Tiniaria Convolvulus (L.) Webb. & Moq. {Polygonum Convolvulus 

 L.) Among bushes from N. S. and B. C. to Fla. and Calif. — Alt. 4000-9000 

 ft. — Box Canon, west of Ouray ; Engelmann Caiion ; Fort Collins ; Colorado 

 Springs. 



2. Tiniaria scandens (L.) Small. {Polygonum scandens L.) In thickets 

 from N. S. to Mont., Fla., La. and Colo. — Exact locality not given. 



Order 24. CHENOPODIALES. 



Fruit a utricle, achene or anthocarp, indehiscent, circumscissile or bursting 

 irregularly. 

 Fruit a utricle. 

 Stipules wanting. 



Bracts not scarious. 45- Chenopodiaceae. 



Bracts scarious. 46. Amaranthaceae. 



Stipules present, scarious. 47- Corrigiolaceae. 



Fruit an anthocarp, the achene surrounded by the tube of the corolla-like calyx. 



48. Allioniaceae. 

 Fruit a capsule, dehiscent by apical or longitudinal valves. 



Ovary several-celled : corolla wanting. 49. Tetragon iaceae. 



Ovary i-celled ; corolla mostly present. 



Sepals, 2 ; or, if more (in Lezvisia), plant scapose, with fleshy basal leaves 



and the flowers solitary on a jointed scape. 50. Portulacaceae. 



Sepals, 4-5 ; plants leafy-stemmed. 



Sepals distinct; petals not clawed; ovary sessile. 51. Alsinaceae. 



Sepals united ; petals clawed ; ovary more or less distinctly stipitate. 



52. Carvophyllaceae. 



Family 45. CHENOPODIACEAE Dumort. Goosefoot Family. 



Embryo annular. 



Stems and branches not jointed; leaves not scale-like. 



Flowers perfect, all with perianth, not inclosed in a pair of bracts. 

 Fruit inclosed in the calyx. 



Calyx in fruit not transversely winged. 

 Sepals 3-5, stamens 1-5. 



Fruiting calyx herbaceous. i. Chenopodium. 



Fruiting calyx fleshy, red. 2. Blitum. 



Sepals I ; stamens i. 4. Monolepis. 



Calyx in fruit transversely winged. 



Flowers paniculate ; leaves ample, sinuate, flat. 3. Cycloloma. 



Flowers spicate ; leaves linear, terete. 9. Kochia. 



Fruit laterally flattened, exserted from the marcescent calyx. 



10. CORIOSPERMUM. 



