160 PAROKTCHIEJS. (WHITLOW- WORT FAMILY.) 



apex. Utricle indehiscent, included in calyx. Seed vertical, with in- 

 ferior radicle — Prostrate, tufted herbs, sometimes shrubby at base, 

 the upper leaves often alternate. 



* Parts of tJie Jlowers in Jives. 



1. H. cinerea, DC. © .1 to .15, ash-colored, hirsute ; stems 

 thick, ascending. Leaves ollong-linear. Flowers sessile, 7-10 in crowd- 

 ed clusters ; calyx-lobes oblong leset with bristles of equal length, nearly 

 as long as J^eadth of sepals ; styles short, distinct — Spring — Sterile 

 fields and roadsides ; throughout, even in deserts. 



2. H. hirsuta, L. or If .1 to .3, hirsute. Leaves oblong- 

 ellijnicah tapering at base. Flowers sessile, 7-10 in a head ; calyx- 

 lobes oblong, leset with short bristles, the terminal longer, stigmas subses- 

 nU — Spring and Summer — Waste places ; coast and Lebanon. 



3. H. glabra, L. or If .05 to .15, glabrous. Leaves ob- 

 long, tapering at base, sometimes ciliate. Flowers sessile, 7-8 in alter- 

 nate clusters opposite the leaves ; calyx-lobes ovate, obtuse ; style 

 very short, bifid with divergent stigmas — Spring and Summer — 

 Fields ; subalpine Lebanon and Antilebanon to Aleppo, AintSb, 

 Amanus, and northward. 



Var. tenera, Post. Tender. Flowers often solitary. Leaves 

 oblong-linear — Aintab. 



4. H. incana, Lam. If .1 to .3, velvety -canescent ; stems woody 

 below. Leaves obovate-oblong to oblong-spathulate. Flowers 2^cdicel- 

 led, 3-6 m a head or solitary ; calyx-lobes ovate, hirsute, with loose, 

 white, equal hairs ; stigmas subsessile, forked — May and June — 

 Mountains of Galilee to Lebanon. 



* * Parts of flower in fours. Stamens two. 



5. H. bemiitemon, I. Gay. If TJmm-Libbaidah. .05 to .1, 

 velvety, densely tufted ; stems brittle, filiform. Leaves oblong ; stijmles 

 brown. Flowers sessile, glomerate-spiked ; calyx-tube hispid, the out- 

 er two lobes herbaceous, fleshy, delta id-spathulate, four times as long as 

 the ovate, membranous, inner pair ; styles 2, long, free fro7}i base — May 

 — Judean desert, el-Ghor, et-Tih and southward to Sinai and Egypt. 



5. PARONYCHIA, Tourn. Whitlow^-wort. EhasUshat-ed-Dahhis. 



Calyx-lobes 5, plano-concave or hooked at apex. Petals 

 filiform. Stamens 5 or 3, inserted at the throat of the calyx. Style 

 bifid. Utricle membranous, included in the calyx, rupturing irregular- 

 ly at base. Seed erect, radicle superior — Opposite leaved herbs, with 

 flowers nearly or quite hidden by silvery-scarious, often oblique bracts, 



* Calyx-lobes herbaceous, not hooded at apex, plano-concave. 



t Calyx-lobes nearly equal. 



1. P. capitata, Koch. If .1 to .15, often shrubby at base ; 

 branches rather long, ascending m^ prostrate. Leaves^obovate to oblong, 

 .003 to .005 long, rather obtuse, appressed-puberulent. Heads .015 



