32 



SCR0PHULARIACEJ2. 



LlNARIA. 



* Elatinoides, Chavan. Spur of the corolla as long as the tube. Capsule with an oblique circumscribed opening, or one- 



valved at the apex. 



1. Linaria Elatine, Desf. Trailing Hairy Toad-Jlax. 

 Procumbent, hairy ; leaves broadly hastate, acute , the lowest ovate, opposite ; peduncles 



solitary, axillary, very long; spur straight, subulate. — Ait. Kew. (ed. 2.) 4. p. 20. Antir- 

 rhinum Elatine, Linn. ; Engl. lot. t. 692 ; Pursh, fl. 2. p. 421 ; Torr. cotnpe?id. p. 240 ; 

 Beck, hot. p. 264. 



Annual. Stem throwing out long spreading branches, very hairy. Leaves diminishing 

 regularly in size from the base to the extremity of tho branches ; the lowest with a few remote 

 teeth : petioles about an inch long. Peduncles slender ; one from the axil of nearly every 

 leaf, and diverging horizontally from the stem. Flowers twice as large as in L. Canadense. 

 Calyx-segments lanceolate. Corolla yellowish, with the upper lip purple : spur extended. 

 Capsule depressed ; the cells 5 - 6-seeded. 



Sandy fields ; near Albany (Dr. Beck), and shore of Cayuga lake (Dr. Gray). Probably 

 introduced from Europe. Fl. July. 



** Lin aria strum, Chavan. Spur of Ike corolla about as long as the tube. Capsule opening at the summit by 4 - 10 teeth 



or valves. 



2. Linaria vulgaris, Mcsnch. Common Toad-Jlax, or Ransted. 



Erect ; leaves linear, verticillate and scattered ; flowers imbricated in a terminal spiked 

 raceme ; calyx smooth, shorter than the spur of the corolla. — Ait. Kew. (ed. 2.) 4. p. 17 ; 

 Darlingt. fl. Cest. p. 368. Antirrhinum Linaria, Linn. sp. 2. p. 618 ; Engl. hot. t. 658; 

 Pursh, fl. 2. p. 421 ; Bigel. fl. Bost. p. 243 ; Torr. compend. p. 240 ; Beck, hot. p. 264. 



Whole plant of a glaucous hue and smooth. Root perennial. Stem 1-2 feet high, some- 

 times a little branched, but usually simple. Leaves numerous, 1-2 inches long and 1-2 

 lines wide, acute. Flowers large and rather showy, in a dense raceme. Calyx-segments 

 oblong, acute. Corolla pale pellow ; the palate tinged with orange. Spur subulate. Capsule 

 ovoid-oblong. Seeds conspicuously margined. 



Road-sides, fields, etc ; very common. June - October. A pernicious weed, doubtless 

 of European origin, and now spread over the northern and middle regions of the United States. 

 It is sometimes called Snapdragon, and Continental-weed. I have found at West-Point a 

 variety with 3 spurs. Another form, called Peloria, with 5 spurs, 5 stamens and a regular 

 corolla, has been occasionally seen, but is very rare. 



3. Linaria Canadensis, Spreng. Canadian Toad-Jlax. 



Stem erect or assurgent, mostly simple ; leaves linear, scattered, obtuse ; flowers racemose ; 

 scions procumbent. — Spreng. syst. 2. p. ... ; Bot. mag. t. 3473 ; Hook. fl. Bor.-Am. 2. 

 p. 94. Antirrhinum Canadense, Linn. sp. I. p. 618; Vent. hort. Cels. t. 49 ; Walt.fl. Car. 

 p. 169 ; Michx. fl. 2. p. 20 ; Pursh, fl. 2. p. 421 ; Ell. sk. 2. p. 113 ; Bigel. fl. Bost. 

 p. 243 ; Beck, bot. p. 264. 



