LOA9A FAMILY. 151 



A. hilinilis, from Mass. to Michigan and S. ; has narrow oblanceolato or 

 epatulate leaves, tapering to the base, and a very short style. ® 



A. latit'dlia. W. & S., taller, the lance-liuear leaves with a broader and 

 auricled partly clasping base. ® 



6. CUPHEA. (Name from Greek, means (7!'W«*s or CMTOcd, from the shape 



of the calyx. ) lieaves cliiefly opposite : fl. all summer. 



C. viscosissima. Clammy C. Sandy fields from Conn, to III. and S. : 

 a rather homely herb, 1° - 2° high, branching, tlammy-haii-y, with lance-ovate 

 leaves, small flowers somewhat racemed along the branches, and ovate pink 

 petals on short claws. (T) 



C. silenoldes. Cult, fi-om Mexico : clammy-hairy, 1° high, with lance- 

 oblong or lahceolate leaves tapering at base Into short petiole, and rather large 

 flowers somewhat racemed on the branches ; calyx purplish, almost 1 ' long, 

 ovoid at base and with a tapering neck ; petals blood-purple or crimson, rounded, 

 the 2 larger ^' in diameter. ® 



C. platyc6ntra. Cult, from Mexico, both in greenhouses and for bor- 

 ders, flowering through the season : slightly woody at base, 8' - 12' high, form- 

 ing masses, thickly beset with the ovate or lance-ovate acute smooth and glossy 

 bright green leaves, contrasting with the bright vermilion flowers between each 

 pair, the calyx narrow and tubular, almost 1' long, with a short and very blunt 

 spur at base, the short border and teeth dark Violet edged on the upper side 

 with white ; petals none. "}}. 



48. LOASACE^, LOASA FAMILY. 



Herbs with rough pubescence, and some with stinging bristles, no 

 stipules, a 1-celled ovary coherent with the tube of the calyx (which 

 is little if at all extended beyond it), and mostly with 3-5 parietal 

 placentas, in fruit a pod, few — many-seeded : persistent calyx-lobes 

 and true petals mostly 5, and often an additional inner set of pet- 

 als : stamens commonly numerous, often in 5 clusters : style single. 

 Natives of America, mostly S. & W. : several cult, for ornament. 



* Erect or spreading, not twining: leaves alternate: petals flat. 



1. MENTZELIA. Petals lanceolate, spatulate, or obovate, deciduous. Filaments 



long and slender, or some of the outermost broadened or petal-like; antlier.s 

 short and small. Pod top-shaped, club-shaped, or cyliudriciil, straight. Herb- 

 age rough with short stiff pubescence, or bristly, biat not stinging. 

 • » Twining herbs: leaves opposite, petioled : petals hood-sliaped or slipper-shaped. 



2. BLUMENBACHIA. Petals 5, spreading, and as many scale-like small ones or 



appendages alternate with them. Stamens in 5 sets, one before each petal, 

 with very slender filaments ; also 10 sterile filaments, a pair before each ap- 

 pendage. Ovary and many-seeded pod 10-ribbed, when old spirally twisted 

 and splitting lengthwise. Peduncles axillary, mostly 1-flowerod. ''Herbage 

 beset with sharp bristles, commonly stinging like nettles, li'lowers on long 

 axillary peduncles. 



1. MENTZELIA. (Named for C. Mentzel, tm. early German botanist.) 

 Fl. summer or autumn. ® (g Includes the Bart6nia of Nuttall and 



EnCNIDE. 



§ 1 . Pod 3 - 9-seeded : flmvers small, yellow, opening in sunshine. ® ® 

 M. Oligosp^rma. Open dry ground, from Illinois S. W. : a rough and 

 homely plant, .with spreading brittle branches, ovate and oblong angled or cut- 

 toothed leaves, and yellow flowers less than 1' broad. With 5 wedge-oblong 

 pointed petals, and about 20 slender filaments. 



§ 2. Bart6nia of Nuttall,- &c., not of Muhlenberg. , Pod mostly long, contain- 

 ing manjf. or at least 20 culfieaJ.. or fiat seedb t jflcwers large and shoivy ; 

 pMs V " i' long : herbage rdtyh: 



