PRIMULACEAE 243 



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

 I/UZBRNE ; Huntingdon ; Centre ; Somerset ; Crawford ; Erie. 



Order 2. PRIMULALES. 

 Family i. PRIMULACEAE Vent. Primrose 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. Samolus. 



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. :fvYSIMACHIA. 

 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. SAMOLTJS L. 



1. Samolus floribundnsH. 6. K. WATER PIMPERNEL. BrookweEd. 

 (Man. p. 715 ; l.F./. zSio. ) In swamps and brooks, N. B. to Fla., B. C, 

 Tex. and Calif. — Pennsylvania : Bucks ; Chester ; Lancaster ; Frank- 

 lin ; Huntingdon. 



2. LVSIMACHIA 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. 



I. L. vulgaris. 

 Flowers axillary ; corolla with glandular-ciliolate lobes. 



^. L. punctata. 

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



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

 Fowers 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. Lyslmachia vulgaris L. Golden or Yellow Loosestrife. 

 (Man. p. 715 ; L F. /. 2811.) In fields and along roadsides, Me. to N. 

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

 ware, Tinicum. 



2. Lyslmachia punctata L. SPOTTED LoosESTRlEE. (Man. p. 716; 

 I. F. /. z8i2. ) In waste places, N. S. to N. J. and Pa. Adv. from Eu. — 

 Pennsylvania : Northampton. 



