;yxoptical kf.y to the orders, &c. 



SrBci.ASS I. ANGIOSPERM.E coiitinnerl. 



Division III. ATETAL.-E : corolla (ami sonietinics calyx) wanting. 



A. Ovary superior, free from the calyx though sometimes enveloped in it. 



• Ovary 1-celleJ : ovules solitary, basal : emhryo coiled or more or less curved. Herbs or rarely 



shrubs. 



+- Fruit an akene. 

 7ii. Nyctagiiiacea, p. 1. C'alyx coroUa-like, tubular to funnelfonn or campanulate, the per- 

 sistiut l>ase hardening and enclosing the akene. Stamens hypogynous. Style simple. 

 Herliaceous, with ojiposite entire leaves, no stipules, and involucrate Howers. 



77. Polygonacece, p. 6. Calyx mostly persistent, of 3 to 6 segments, distinct in 2 rows or 



united, the inner or all jietaloid. Stamens perigynous. Styles 2 to 4. Akene mostly 



triangular. Endiryo nearly straight. Herbs or rarely woody, with mostly alternate 



entire leaves, with or without sheathing stij>ules ; flowers on jointed pedicels, often 



involucrate. 



+- -1- Fruit a utricle : flowers sessile : leaves mostly alternate ; stipules none. 



78. Amarantaceae, p. 40. Calyx persistent, of 3 to 5 distinct more or less scarious sepals 



in one row. Stamens liypogynons. Style simple or none. Seed lenticular, vertical. 

 Fjubrvo annular. Herbs'with entire leaves ; flowers scarious-bracteate, 

 7!>. Chenopodiaceae, jt. 43. Calyx of 5 or fewer mostly herbaceous sepals in 1 row, or none. 

 Styles or stigmas 1 to 4. 'Embryo annular or s\nvii\. Herbs or shrubby ; flt)wers often 

 unisexual, the perfect and stamiuate without bracts, the pistillate usually naked within 

 herbaceous bracts. 



* * Ovary 4-celled : ovules solitary, basal: embryo curved. 



80. Batideae, p. 60. A fleshy maritime shrub, with dicecious bracteate flowers in sessile axillary 



ament-like spikes. Ovaries coherent, becoming fleshy. 



* * * Ovary 1-celled : ovules solitary, pendulous or sometimes erect : embryo straight. 



-i- Trees or shrubs, with alternate entire leaves and no stipules : fruit a berry or drupe : embryo 

 with large thick cotyledons. 



++ Flowers perfect ; calyx deciduous : ovule pendulous. 



81. Lauraceae, p. 60. Calyx 6-parted. Anthers oi)cning by valves. Fruit a drupe. Aromatic 



82. Thyraeleaceae, p. 61. Calyx gamosepalous, 4-cleft. Fruit a berry. Shrulis with very 



tongli b;irk. 

 + + ++ Flowers dia^cious : calyx persistent about the ovary, becoming thickened or baccate : 



ovule erect. 



83. Elaeagnaceae, p. 62. Calyx of fertile flowei-s tubular. Shrubs with scurfy f()liag(>. 



+- +- Herbs or trees, with unisexual flowers, and mostly lobed or serrate and stipulate leaves : 



fruit an akene. 



84. Urticace^, p. 63. Filaments inflexed in the bud. Akene flattened ovoid. Seed erect. 



lleibs with tough bark, mostly oi)posite and .senate leaves, and usually cymose axillary 



inll.Mvsc.Mic.-. 

 00. Ceratophyllaceee, ]). 78. Submerged acpiatic, with sessile filifonnly divided exstipulate 



Icuv.s ;iii(l axillary sessile flowers without calyx. Anthers sessile. Akene beaked. 



Ovidc pcmlulous. 

 8.'). Platanaceae, j). 6.t. Infloiescence in dense globose heads. Akene ob]iyramidal, beaked. 



Uvnle pendulous. Trees with flaky bark and lobed stipulate leaves. 



