202 THE MUSTARD FAMILY. 



in cut and outline resemble those of Dentaria laciniata. Their divisions are 

 very much narrower than are those of the large ovate basal leaves. Its 

 range lies in the mountains of Georgia and Tennessee northward to Penn- 

 sylvania and New Jersey. 



LYRE=LEAVED ROCK=CRESS. 



Arabis lyrata. 



FAMILY COLOUR ODOUR RANGE TIME OF BLOOM 



Mustard. White. Scentless. Missoitri and Kentucky April-September. 



northward. 



Flowers : growing in racemes. Sepals : four ; small ; yellowish. Petals : 

 considerably longer, squared or rounded at their apices. Fods ; long; linear ; 

 ascending. Leaves: those of the base tufted and lyrately-pinnatifid ; those of 

 the stem narrowly spatulate, or linear ; sessile ; entire or dentate. Stem : erect ; 

 slender; leafy; pubescent below. 



On rocky cliff, often by the side of Draba ramosissima, this little plant 

 appears sometimes to be showered with its pure white and dainty blossoms. 

 About Its base the tufted leaves grow often so closely to the ground that 

 unless other growth is pushed aside they rest unseen. 



A. IcBvigata, smooth rock-cress, found in rocky mountainous woods 

 from Georgia northward, is simple or but sparingly branched, wholly smooth 

 and peculiar in having its very slender seed pods much recurved. About 

 the flowers there is a slightly greenish tint. Its basal leaves are spatulate, 

 sharply dentate, while those of the stem are lanceolate, or linear, partly 

 clasping and project at their bases small, ear-like lobes. 



BRANCHING WHITLOW=GRASS. 



Draba ramosissima. 



FAMILY COLOUR ODOUR RANGE TIME OF BLOOM 



Mustard. White. Scentless. North Carolina and Tennessee to April-June. 



Virginia a7id Ketitucky. 



Flowers: small, growing on pedicels in lateral and terminal, erect panicles. 

 Calyx : with four small, ovate sepals, not falling very early. Corolla : cruci- 

 form, with four clawed, entire petals. Stamens : six, two shorter than the others. 

 Pistil: one ; style, protruding, slender. Pods: oblong, twisted, projecting the 

 style. Leaves : simple ; sessile ; oblong, ovate, or oblanceolate, pointed at the 

 apex and rounded or tapering at the base ; remotely dentate ; rough and hairy 

 on both sides. Stent : erect ; six to eighteen inches high, branched below ; very 

 leafy ; hairy. 



There is something in the young dentate leaves which this plant sends 

 up in early spring to well establish it in the memory. It is besides a dainty, 

 pretty thing to find as through the mountainous parts of its range it ven- 

 tures even to the edge, or perhaps peeps over, some high and rocky cliff. 



