SCROPHULARIACEAE (fIGWOKT FAMILY) 437 



prismatic: capsule ovoid, spinose-priokly, 4-5 cm. high j — An introduced weed 

 in fields and waste places. , 



2. Datura Stramoniiun L. Sp. PL 179. 1753. Quite similar,, but less pu- 

 bescent; ste^m. stouter, green; -leaves ovate, acute or acuminate, narrowed at 

 base, sinuate or angulate toothed: flowers white: calyx half as long as the 

 corolla: capsule as in. the. preceding. Jamestown or Jimson, Weed. — Fre- 

 quent as an introduction about old buildings and in barn lots. 



3. Datura meteloides DC. Prodr. 13: 544. 1852, Pruinbge-glaucescent 

 with minute puberulence or . pubescence: leaves wnequally ovate, repand to 

 entire: calyx cylindrical, about 7.5 cm. long: coroUa white or suffused with 

 violet, sweet-scented, 1.5-2 dm. long; pod thickly armed with short equal 

 prickles, nodding on the short' peduncle.^Extending through Colorado; 

 probably indigenous in the southern portion, as it is in the Texas-Arizona belt. 



6. NICOTIAN A L. Tobacco 



Acrid-narcotic mostly clammy-pubescent herbs, with' ample leaves and 

 racemed or panicled flowers. Calyx ti^bular-caipapanulate, 5-cleft. Corolla 

 funnelform or salverform, usually with a long tube and 5-lobed plaited border. 

 Stigma capitate. Capsule 2-celledj 27i-.vsi,Ived from the apex. Seeds nu- 

 merous, minute. ' ' ) ) - /" I w 



Stem leaves petioled ■• - ■■,''* .1. ^. .attenuata. ) 



Stem leaves sessile , . , . ,. . . . ' , . . . . 2i ^^, ti^igonophylla. 



1. Nicotiana attenuata Torr.' inWats: Bot; King's Bxped.' 276. 1871. Stem' 

 3-5 dm. high: leaves all on naked and mostly slender petioles, acute or sub- 

 obtuse at base; the lower ovate or oblong; the' upper oblong-lanceolate and 

 attenuate-acuminate to linear-lanceolate or linear: cor.olla dull white or 

 greenish, slender salverform, not enlarged at ithe throat; the tubei 3—4 omj 

 long; the limb, 8-10 mm. broad: filaments .equally i]}sertefi,ilow ,down on the 

 tube. — In dry groimd; from Colprado to Idaho and California. 

 : 2. Nicotiana trigonophylla Dunal, in DC, Prodr. 13: 56^. 1852. Viscii- 

 pubescent, 4-6 dm. high: lpa^^es sessile or the lower tapering to a winged 

 petiole, obovate-oblong to oblong-lanceoiate,, sometimes with a cordate or 

 auricled base, 3-10 cm. long: inflorescence at length loosely paniculate- 

 racemose: coroMa greenish-white or yellowish, aboi^it 18 mm. long, somewhat 

 pubescent, the sinuately-lobed limb about 8 mm. brpad.— Probably extend- 

 " ing into southern Colorado from Texas and New Itlexioo. ' ^ 



104. SCROPHULARIACEAE Lindl. Figwort Family 



Herbs, shrubs, or rarely trees (ours herbs or rarely shrubs) with exstipulate 

 leaves. Calyx variously toothed, cleft, or parted. , Corolla synipetalous (rarely 

 wanting), more or less irregular, the limb 2-lipped or nearly entire and the 

 Ipbes ijtnbricatfid in the'bujj. S,tamen9,^dyiiamous (or perfect stamens only 2, 

 rarely 5), inserted on the corolla-tube and alternate with the lob§s; the aether 

 sacs sometimes unequal, or confluent, or reduced to one. Pistil 1 ; the ovary 

 2-celled, becoming a 2-celled many-seeded capsule with central placentae. 



Anther-bearing stamens 5; ' leaves alternate ' U' ■ ^' ( J -':•: •'.. 1. Verbasciun, 

 Anther bearing stamens 4 or 2. , , ; ; , , 



Corolla spurred or sacc^te,at base on the lower side . . .2. Linaria. 



Corolla iiot spurred, but' sometimes soniewhatveritrfcose or gibbous. 



Stamens 5, four anther bearing, the fifth' often Tudimentary. > . i 



Sterile stamen redmedi to a scale or .gland on the upper side of 

 the corolla-tube 

 Small annuals; peduncle^ 1 -flowered; corolla gibbbus at base^ 



seeds solitary or few , ' . i , - . . . . ; , , ; -3, CoUinsia. 

 Coarse perennials; peduncles several-flowered; corolla some- 

 what ventricose; seeds numerous . . • . , 4 Srrophularia 



