PRIMUI.ACEAE 243 



ROE ; Northampton ; Bucks ; Dei,aware ; Chester ; Lancaster ; 

 Luzerne ; Huntingdon ; Centre ; Somerset ; Crawford ; Erie. 



Order 2. PRIMULALES. 

 Family i. PRIMULACEAE Vent. Prkmrose Family. 



Plants caulescent (the stem-leaves mere scales in Trientalis): corolla-lobes 

 erect or merely spreading. 

 Corolla-lobes imbricated at least in the bud. i. Samolxjs. 



Corolla-lobes valvate or convolute in the bud. 

 Capsule opening by longitudinal valves. 



Flower-cluster not subtended by a whorl of leaf-like bracts : corolla 

 yellow. 

 Androecium not accompanied by staminodia : corolla-lobes convolute. 



2. Lysimachia. 

 Androecium with staminodia. 

 Anthers linear : corolla without teeth in the sinuses : flowers axillary 



to leaf-like bracts. 3. Steironema. 



Anthers oblong : corolla with teeth in the sinuses : flowers in dense 

 peduncled axillary spike-like racemes. 4. Naumburgia. 



Flower-cluster subtended by a whorl of leaf-like bracts : corolla white. 



5. Trientalis. 

 Capsule circumscissile. 6. Anagallis. 



Plants scapose : corolla-lobes reflexed. 7. Dodecatheon. 



1. SAMOLUS L. 



1. Samolusfloribundus H.B.K. Water Pimpernel. Brookweed. 

 (Man. p. 715 ; L F.7^ 2810. ) In swamps and brooks, N. B. to Fla., B. C, 

 Tex. and Calif. — Penyisylvania : Bucks; Chester ; L-'^ncaster ; Frank- 

 lin ; Huntingdon. 



2. LYSIMACHIA L. 



Leaves whorled, or rarely some of the nodes with only a pair. 

 Corolla rotate-campanulate, without dark streaks. 

 Flowers in terminal panicles : corolla with glabrous lobes. 



1. L. vulgaris. 

 Flowers axillary : corolla with glandular-ciliolate lobes. 



2. L. punctata. 

 Corolla rotate, dark-streaked. 3. L. quadrifolia. 



Leaves merely opposite or rarely some of the nodes with a single leaf. 

 Powers in a terminal narrow raceme, plants with erect stems. 



4. L. terrestris. 

 Flowers axillary to leaf-like bracts : plants with creeping stem. 



5. L. Nummularia. 



1. Lysimachia vulgaris L. Golden or Yellow Loosestrife. 

 (Man. p. 715 ; I. F. f. 2S11.) In fields and along roadsides, Me. to N. 

 Y. and Pa. Nat. from Eu. — Pennsylvania : York, York Furnace ; Dela- 

 ware, Tinicum. 



2. Lysimachia punctata L. Spotted Loosestrife. (Man. p. 716 ; 

 I. F, /. 2812. ) In waste places, N. S. to N. J. and Pa. Adv. from Eu. — 

 Pennsylvania : Northampton. 



