II. SYNOPTICAL KF.Y TO THE ORDERS, &c. 



Subclass I. ANGIOSPERM.E continued. 



Division III. APETAL.E : corolla (and sometimes calyx) wanting. 



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



* Ovary 1-celled : ovules solitary, basal : embryo coiled or more or less cui-ved. Herbs or rarely 



slirubs. 



+- Fruit an .akene. 



76. Nyctaginaceae, p. 1. Calyx corolla like, tubular to funnelform or canipanulate, the per- 



sistent l>ase hardening and enclosing the akcne. Stamens liypogynous. Style simpU'. 

 Herbaceous, with opjiosite entire leaves, no stipules, and iuvolucrate llowers. 



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



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



trianf'ular. Endiryo nearly straight. Herbs or rarely woody, with mostly alternate 



entire leaves, with or without sheathing stipules ; flowers on jointed pedicels, often 



involncrate. 



-H +- 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 liypogynous. Style simple or none. Seed lenticidar, vertical. 

 Embryo annidar. Herhswith entire leaves ; flowers scariousdiracteate. 



79. Chenopodiaceae, p. 43. Calyx of 5 or fewer mostly herhaceous sepals in 1 row, or none. 



Styles or stigmas 1 to 4. "End>ryo annidar or sjiiral. Herbs or shrubby ; flowers often 

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

 herbaceous bracts. 



* * Ovary 4-celled ; ovules solitary, basal : cnd)ryo curved. 



80. Batidese, p. 60. A fleshy maritime shrub, with dioecioiis bracteate flowers in sessile axillary 



amentdike spikes. Ovaries coherent, becoming fleshy. 



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



-4- Trees or shrubs, with alternate entire leaves and no stipules : fruit a berry or drupe : embryo 

 with large thick cotyledons. 



+ t Flowers perfect ; calyx deciduous : ovide pendulous. 



81. Lauraceee, p. CO. Calyx C-parted. Anthers opening by valves. Fruit a drupe. Aromatic 



S'l Thymeleace«, p. 01. Calyx gnmosepalous, 4-cleft. Fruit a berry. Shrubs with very 



tough bark, 

 .f +f Flowei-3 dia-cious: calyx persistent about the ovary, bcconnug thickened or baccate: 



ovule erect. 



83. El«agnace«, p. 62. Calyx of fertile flowers tidiular. Shrubs with scurfy foliage. 



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



fruit an akene. 



84. Urticace*, p. 63. Filann-nts inflexed in the bud. Akene flattened (jyoid. S.'ed erect. 



Herbs with tough bark, mostly opposite and .serrate leaves, and usually cymose axillary 



infloreseence. .,„,./. , i- ■ i i *• i * 



!t() Ceratophyllacece, i.. 78. Subnu-rged aquatic, with sessde filiforndy divuieil ex.s ipnlate 



leaves aiul axillary sessile floweis without calyx. Anthers ses.^ile. Akene beaked. 



Ovule pendulous. , , ., , ,1111 



85 Platauace^, p. 6,o. Inflorescence in dense globose heads. Akene obpyramidul, beaked. 



Ovule pen.lulous. Trees with flaky bark and lobed stipulate leaves. 



