PORTULACACEAE— POLYGON ACEAE— SALIC ACEAE 



15 



Portulacaceae — Purslane Family 

 Fleshy herb';; sepals 2. rarely 5, petals 4-5, stamens 4 30, ovary l-celled; flower syncarpous, 

 apopctalous, hypogynous, somewhat irregular. 

 1. Flowers white to pink; stamens 5 



I >urrs mostly yellow or red: stamens mori than 5 



Portulaca Purslane 1 ! Moss Ro 



I I. portulaca, purslane) 

 PI. 5 G 

 1. Rowers 5 6 mm. wide, yellow ; leaves flat, wedge-shaped 

 1 3 5 cm. wide, many-colored ; leaves round, linear 



Claytonia Spring Beauty 

 mod for Clayton, an American botanist) 

 PI. 5. fig, F 



1. leaves linear 



2. Leaves mate or ovate lanceolate 



Claytonia 

 Portulaca 



P. olerdcea 

 P. grqndifldra 



g in iea 

 C. carolinidna 



Polygonaceae — Buckwheat Family 

 Herbs with simple leaves; sepals 2-6. often somewhat united and petal-like, petals 0, stamens 

 2-°, ovary l-celled. fruit an achene ; flower syncarpous, apetalous, hypogynous, regular. 



1. 1. i.ives round, 1 ft. or more p.cross ; petioles fleshy, sour Rheum 



2. Leaves lanceolate or lance-oblong; petiole-, not fleshy Rumex 



Rheum — Pie-plant, Rhubarb 



(Gr. rheon, name of a medicinal plant) 



1. Leaves deeply lobed 



a. Leaves rough 



b. Leaves hairy 



2. Leaves entire or ncarlv so 



R. palladium 

 R. officinale 

 R. rhapdnticum 



Rumex — Sheep Sorrel 



(L. rumex, sorrel) 

 I. Leaves arrow-shaped, sour 

 2 Leaves lanceolate or lance-oblong, somewhat bitter 



a. Leaves curled at edges; valves of flower grain-bearing 



b. Leaves hardly curled; usually 1 valve grain-bearing 



Allionaceae — Four O'Clock Family 

 Herbs with simple leaves; sepals 5, united into a bright corolla-like tube, petals °. stamens 3-5, 

 ovary l-celled. fruit 1-seeded, achene-like. enclosed in the base of the calyx; flower syncarpous, 

 synsepalous, apetalous. apparently enigynous. usually regular. 



1. Stamens 3 



2. Stamens 5 



Allionia— Wild Four O'Clock 



<Xamed for the Italian botanist. Allioni) 

 PI. 5. fi?. LI 

 Flowers pink : leaves ovate 



Mirabilis — Four » I'Clock 



(L. mirabilis, wonderful) 

 Flowers many-colored : leaves ovate 



Salicaceae — Willow Family 

 Trees or shrubs with simple leaves: sepals 0, petals 0. stamens 1-60. ovary l-celled, capsule 

 2-4 waived, seeds hairy: flowers dioecious, calyx and corolla both lacking. 



I. Rracts entire; stamens usually less than 10 Salix 



II. Bracts cut or fringed: stamens usually more than lit ulus 



Salix Willow 

 i r. salix. a willow-tree) 

 PI. 5, fig. .1:1.2 

 1. Leaves and stipules with glands* S.lucida 



R. aeetosrlla 



R. erispus 



R. obtusifolius 



Allionia 

 Mirabilis 



A. nyctogbiea 



M. jalapa 



'No attempt has been made to make a complete key to the willows, since it is impossible to 

 determine them without the fruit. 



