504 ORDER 18. PRIMULACE^E. 



T. Americana Ph. St. erect, simple, leafless at base ; Ivs. glomerate, few, nar- 

 row-lanceolate, serrulate, acuminate ; sep. linear, acuminate. This little plant is 

 common in the rocky woods of Can., N. States, southward to Atalanta, Ga. St. 

 3 to 6' high, with an irregular whorl of 4 to 8, lanceolate, smooth and shining 

 Ivs. at the top. In the midst of these are 1 to 4 white, star-like fls., borne on 

 simple, filiform pedicels. The Ivs. are mostly 3' long and 1' wide. Segm. of oor. 

 longer than the acute caL Ivs. May, Jn, 



8. NAUMBER'GIA, Mcench. (Dedicated to one Naumberg, an early 

 German botanist.) Calyx and corolla deeply 5 to 6-parted; petals 

 linear-lanceolate, spreading, separated by minute intervening teeth ; 

 stamens 5 to 6, inserted into the base of the corolla, exserted, anthers 

 cordate ; capsule globous, 5-valved ; seeds few, on a globous placenta, 

 2 with opposite Ivs. Fls. small, in dense, thyrsoid racemes. (Ly- 

 simachia L.) 



N. thyrsiflora Mcench. An erect, smooth herb, about 2 f high, Mass., Yt., N. Y., 

 W. to Ohio, N. to Arc. Am. Lvs. many pairs, sessile, lanceolate acute, entire, 

 punctate, somewhat canescent beneath, 2 to 3' by \ to 1'. Rac. somewhat 

 capitate, on filiform, axillary ped. Fls. yellow. Stam. much exserted, united 

 into a tube at base. Jn. 



9. LYSIMACH'IA, L. LOOSE-STRIFE. (To Lysimachus, King of 

 Sicily, who first used it. Pliny.) Calyx 5-parted, rotate or campanu- 

 late, tube very short ; stamens 5, inserted into the corolla at basq ; 

 filaments often somewhat connate or with intervening, sterile ones ; cap- 

 sule globous, 5 to 10-valved, opening at the apex ; seeds few or many. 

 Herbs 1C, with opposite or verticillate entire Ivs. (Fls. yellow.) 



Sterile filaments 0. Perfect stamens 5. unequal. Leaves and often the flowers dotted, (a) 



a Flowers verticillate, in a terminal, bracted raceme Nos. 1, 2 



a Flowers opposite or verticillate, axillary or panicled Nos. 3, 4 



Sterile filaments 5 short teeth interposed between the perfect stamens Dotless. (b) 



b Stem erect. Leaves opposite, acute and tapering at base Nos. 5, 6 



b Stem erect. Leaves opposite, obtuse or subcordate at base No. 7 



b Stem decumbent and trailing. Loaves opposite Nos. S, 9 



1 L. stricta Ait. Simple or branched, erect ; Ivs. opposite (rarely) ternate, Ian* 

 ceolate or lance-linear, glabrous, punctate, acute, sessile ; fls. verticillate, in a long, 

 lax, terminal raceme; pet. lanceolate spreading. U In low, wet grounds, Can., 

 N. Eng. to Va. and Ohio. Plant smooth, 1 2f high, raceme G 8' long. Ped. 

 1' long, spreading, each with a subulate bract at base. Stamens 2 long and 3 

 short, united at base. Pis. yellow, streaked with purple. After flowering it 

 throws out bulblets from the axils of the leaves, which will produce new plants 

 the following spring. Jl. 



2 L. Herbemonti Ell. Glabrous, simple ; Ivs. wltorled in 4s or 5s, sessile, lance- 

 ovate or ovate, obscurely 3-veined, acuminate, glaucous beneath ; margin revolute, 

 entire ; fls. verticillate, in a terminal, bracted raceme. A handsome species, near 

 Columbus, S. Car. (Herbemont). Plant 2f high. Lvs. becoming more narrow 

 above, passing into the linear bracts, and with the bright yellow fls., sprinkled 

 with dots. Stem unequal. Jn., Jl. 



3 L. quadrifolia L. Simple, erect ; Ivs. verticillate, in 4s, rarely in 5s or 3s, ses- 

 sile, lanceolate, acuminate, punctate; ped. axillary, 1 -flowered, in 4s (3s or 5s); 

 pet. oval, obtuse, 1 In low grounds, river banks, Can. to Car. and Ky. Stem 

 18' high, somewhat hairy, simple, with many whorls of 4 3 leaves, each bear- 

 ing a flower-stalk in its axil. Corolla yellow, with purple lines. Stamens un- 

 equal, united at base into a short tube. Anth. purple. Jn. 



4 L. Fraseri Duby. Glandular-pubescent and branched above ; Ivs. opposite, 

 petiolate, ovate, often cordate, acuminate, glabrous ; fis. in a compound, terminal, 

 bracted panicle. In. S. Car. (Frazer in DC.) Fls. numerous. Cal. segm. acumi- 

 nate, the margins thickened, brownish, ciliated. Stam. unequal, 2 of them 

 shorter than the other 3, sterile fil. none. 



