[Vor. 11 
196 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
b. Style longer than the ovary. 
а. Calyx-teeth short, giving a truncate appearance when in fruit. 
I. Pedicels less than twice as long as the leaves. 
1 Pedicels longer ‘lias xs mem Қ Жек dedu EUR 82, M. acutidens 
tt Pedicels shorter than the leaves.................. Grayi 
уз зо less than 1.2 em. long ................ . M. f 7 
II. Pedicels more than twice as long as the leaves...... 39. M. Bridges 
B. Calyx-teeth distinct, not giving a truncate appearance when in fruit. 
Leaves mostly ovate, dentate.................... 44. M. floribundus 
IL. Leaves mostly elliptical, ti ticulat 48 M. arenarius 
B. Mature calyx little or not at all inflated, sometimes distended by the 
mature capsule. 
a. Corolla-lobes distinctly unequal. 
a. ar prostrate perennials. , 
Stems creeping, rooting freely at the nodes. 
zm Stems succulent. 
+*«+»эзтөо» ө ее е ө өө ө ө э ө э ө э ө ө ө ө ө о ө э э е ө ө ө ө © * 
f Pedicels shorter than the leaves.............- 28. M. prostratus 
її Pedicels much longer than the leaves...........- 29. M. pusillus 
"lvi broadly oyst... l... 6s conn у ко 49. M. pachystylus 
IL. Stems decumbent, producing runners...... 45. M. jungermannioides 
* Leaves short-petioled; anthers en „ел ыс 38. M. аи 
** Leaves sessile, anthers glabrous.............- 87. pole €À 
2. Calyx-teeth unequal, the two indi: teeth longer din 
three оймасы енси А 48. M. alsinoides 
П. Calyx-throat not oblique. : 
1. Mature calyx with corky гіһв........................ 56. M. bicolor 
2. Mature calyx without corky ribs. 
* Style pubescent. 
1 ae жеде shorter than the leaves; corolla reddish- 
Lies ы суо ru d у 62. M. purpureis 
t олай longer than the leaves; — — ? 
come “сулы а. M. ФИИ 
** Style glabrous. 
t Leaves distinctly petioled. лот 
f Leaves narrowly оОМопр.................. 40. M. Pulsif 
tt Leaves ovate. 
S iscid-puberulent............ eene 42. M. атр! 
$ tems viscid-puberulent 20. M. Dudleyi 
