LOASACE.'E. (l.OAS.V lAMILV.) l'J3 



3. G. COCCinea, Xutt. Canescent, puheruknt or ylabrate (6-12' hi^^h), 

 very leafy ; /(y//v.s lanceolate J inear-ohlomj or linear, rcpand-dentu-ulaU' or entire ; 

 flowers in simple spikes, rose-color turuiug to scarlet; fruit tente below, -i-siJeil 

 and broader aboce, 2-3" long. — Minn, to Kan., and westward. 



* * Fruit slender-pedirellcd . 



4. G. filipes, Spaih. Nearly smooth; stem slemler (2-4° liigli) ; leaves 

 linear, mostly tootlied, tapiu-ing at bxse ; hranelies of the i)anic-lo very slender, 

 naked ; frnit ol)ovate-eluI>-slia])ed, 4-angled at the summit. — Open pluces, Va. 

 to ria., west to 111., Kan., and Ark. 



6. STENOSIPHON, 8pa<h. 



Calyx prolonged beyond the ovary into a filiform tube. Filaments (8) nut 

 ai)pondaged at b;use. Fruit iH'clled, l-.seeded. Otherwise as fiuura, which it 

 also resembles in habit. (From <TTev6s, narrow, and aicfxav, a tubr.) 



1. S. virgatUS, Spaeh. Slender, 2-4^ high, glabrous, leafy, leaves nar- 

 rowly lanceolate to linear, pointed, entire, much niduced above; flowers nu- 

 merous in an elongated spike, white, ^' long; fruit pubescent, oblong-ovato, 

 8-ribbed, small. — E. Kan. to Col. and Tex. 



7. CmC^A, Tourn. Enchanter's Nioiitsii.vde. 



Calyx-tube slightly prolonged, the end filled by a cup-shaped disk, deciducnis ; 

 lobes 2, reflexe<l. Petals 2, inversely heart-shaped. Stamens 2. Fruit imlo- 

 hiscent, small and bur-like, bristly with hooked hair.s, 1 - 2-celled ; cells l-.seedeil. 

 — Low and inconspicuous perennials, in cool or damp w^oods, with opposite thin 

 leaves on slender petioles, and small wdiitish flowers in racemes, produced in 

 summer. (Named from Circe, the enchantress.) 



1. C. Luteti^na, L. Taller (1-2° high) ; leaves ovate, sliglitly tootlied ; 

 bracts none ; hairs of the roundish 2-celled fruit bristly. — Very common. (Eu.) 



2. C. alpina, L. Loiv (3-8' high),.S7«oo/A and weak ; leaves heart-shaped, 

 thin, shininij,coarsrli/ toothed ; bracts minute ; hairs of the obovate-oblong l-^-tlled 

 fruit soft and slender. — Deep woods, N. Eng. to Ga., Ind., and Minn. (Eu.) 



Okdku 43. LOASACE^T:. (Loasa Family.) 



Herbs, with a rough or stinging pubescence, no stipules, the C(dyx-tid)e 

 adherent to a 1-celled ovary with 2 or 3 parietal placenta:; — represented 

 here only by the genus 



1. MENTZELIA, Plnmior. 



Calyx-tube cylindrical or club-sliai)ed ; the limb 5-parted, jx^rsistent. Petals 

 5 or 10, regular, spreading, flat, convolute in the bud, deciduous. Stiimcns in- 

 definite, rarely few, inserted with the petals on the throat of the calyx. Styles 

 3, more or less united into one; stiguKus terminal, tninute. Cajtsule at length 

 dry and opening by valves or irregularly at the summit, few -many-seeded. 

 Seeds flat, anatroj)ous, with little albumen. — Stems erect. Leaves alternate, 

 very adhesive by the barbed ])ubescencc. Flowers terminal, soliUiry or cymoHO- 

 clustered. (Dedicated to (\ Mmtz^l, an early German lH)tanist.) 



l.'J 



