TREI.EASE A REVISION OF N. AM. LINAGES. II 



* * Flowers medium-sized or small, yellow; sepals more or less glandular-ciliate or ser- 

 rulate; carpels 5. 

 Calyx persistent; capsule about 3 mm. lonff, lo-valved; carpels without cartilagin- 

 ous insertions at base. 

 Leaves and bracts entire; without stipular glands. 

 False septa essentially complete, not ciliate. 



.Stem terete below ; only the lowest leaves opposite; growing in dry places. 



Capsule ovoid, about 3 mm. long L. Floridajium . 



Capsule depressed-globose, about 2 mm. long L. Virffinianum . 



Stem low. angled ; leaves mostly opposite below the first branch ; grow • 



ing in wet places L. striatum . 



False septa incomplete, ciliate. 



Annual or biennial, inflorescence virgate X. Neo-Mexicanum . 



Perennial, shrubby; flowers corymbose-paniculate L. Kingii. 



Upper leaves and bracts glandular-ciliate or serrulate; stipular glands usually 

 present; stems angled. 



Annual, leaves 3-keeled, glabrous L. sulcatum . 



Perennial, leaves 1. nerved, somewhat puberulent-roughened L. rupesire. 

 Calyx at length deciduous (except in the last) ; capsule 4-5 mm. long, 5-valved 

 through the false septa; carpels with triangular cartilaginous insertions at base; 

 false septa complete. 



Leaves rather remote on the branches, never imbricated ; stipular glands com- 

 monly present; false septa more or less thickened outwardly. 

 Glaucous, often puberulent-roughened; leaves narrow and rather rigid. 



Branches slender; sepals rather narrow, mostly twice as long as the cap- 

 sule, broadly scarious and very slender-pointed; false septa thickened 



for a very small distance at the back L. aristatum . 



Stouter; sepals broader, about half as long again as thecapsule; false 



septa thickened for about one-third their width L. rigidum . 



Green; leaves often broader and less rigid ; false septa thickened for half of 



their width L, lierlandieri . 



Leaves crowded and overlapping on the slender branches; sepals persistent; false 

 septa entirely membranaceous L. multicaule. 



* * * Flowers mostly small, yellow, white, or rose-purple; sepals often glandular-ciliate; 

 petals mostly appendaged at base; carpels 2-3; styles distinct. 



Carpels 2; false septa complete ; petals not appendaged L. digynum. 



Carpels 3; false septa incomplete ; petals often 2-toothed below, usually with a me- 

 dian and a pair of more or less developed lateral ventral appendages at base. 

 Leaves all glandular-denticulate ; false septa very narrow. 



Leaves broadly oval, pointed: flowers rose-colored L. drymarioides. 



Leaves linear, obtuse; flowers yellow L. adenophyllum. 



Leaves entire, without marginal glands ; false septa wide below, 

 Flowers yellow. 



Stems sparingly forked ; pedicels short ; appendages of petals somewhat 



hairy L. Breweri. 



Repeatedly dichotomous ; pedicels rather long and slender ; appendages 



of petals glabrous L. Clevelandi . 



Flowers very small, white; pedicels slender L. micranthum. 



Flowers rose-colored or purplish : 



Nodding on long slender pedicels, remote L. sferguliniim. 



Erect, short pedicelled, mostly densely clustered at ends of the branches. 



Sepals glandular-ciliate, otherwise glabrous X. Californicum . 



Sepals pubescent, not glandular L. congestum . 



