[Vor. 11 
146 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
а. Upper leaves glaucous or pubescent, conspicuously connate-per- 
been ОЗ PPP Ax D secur Lu у 15. M. glaucescens 
8. Upper leaves not glaucous nor pubescent, seldom connate. 
I. Leaves dentate or denticulate, occasionally lyrate. 
l. Leaves broadly ovate, oblong, elliptical, or rounded. 
ы Flowers mostly in d efinite racemes; ел usually shorter 
hy or yellow.. .14. M. guttatus 
** Stems mostly 1-3, rarely ind. coming from а mass 
of fleshy, yellowish rootstocks; pedicels usually longer 
the corollas узш куе ы ы БЫ ы ы бше ыг 8. М. Tilingi 
П. Tovar ыс ces lobed, cut, or parted.............. s M lacindabes 
b. Upper calyx-tooth almost three times the length of the others, the 
lower teeth in Қайы folding over and nearly closing the orifice 
AGORA CUI HUI M TP P UM DS Len Дом 17. M. nasutus 
10. M. luteus L. Sp. РІ. ed. 2, 884. 1763; Willd. Sp. РІ. 3: 
861. 1800; Lindl. in Bot. Reg. 12: under pl. 1030. 1826; Hook. 
in Curtis, Bot. Mag. II. 8: under pl. 3336. 1834; Benth. Scroph. 
Ind. 28. 1835; DC. Prodr. 10: 370. 1846, in part; Hook. & 
Arn. Bot. Beechey's Voyage, 40. 1841; Clos in C. Gay, Hist. 
Chile 5: 140. 1849; Planchon in Fl. des Serres 9: 1. 1853-54; 
Reiche, Fl. Chile 61: 60. 1911. 
M. luteus subvar. macrophyllus Clos in C. Gay, Hist. Chile 5: 
140. 1849; Reiche, Fl. Chile 6: 60. 1911. 
M. aurantiacus Renjifo, Anal. Univ. Santiago 65: 301. 1884, 
not Curtis. 
M. luteus var. aurantiacus (Renjifo) Reiche, Fi. Chile 6': 60. 
1911. 
А creeping glabrous perennial, freely rooting from the nodes; 
stem terete, 1-3 dm. long, decumbent or prostrate; leaves numer- 
ous, broadly ovate, acute, 2.5-3 сш. long, nearly as b 
regularly serrate, 5-7-nerved from the base, the lower short- 
petioled, upper sessile, clasping; flowers few, pedicels 3 or more 
times as long as the calyx, much longer than the subtending leaves; 
calyx campanulate, 1.5-2 em. long, teeth triangular-acute, the 
upper longer; corolla 3-4 cm. long, tube slender, exserted, lobes 
spreading, middle lobe of the lower lip longer than the others, 
throat red-maculate; stamens and style glabrous. 
OMS common along streams and in moist places in 
