ISO CONTRIBUTIONS TO WESTERN BOTANY NO. II 



tics show a much closer relation to the Leguminosac than is commonly 

 supposed. ,In the flowers of Clarkia elegans there is distinct asymmetry 

 in the arrangement of the petals as though they had been derived from 

 the papilionaceous corolla. The two upper petals seem to represent the 

 wings of Hxt pea flower, and iht two lower ones the parts of the keel, the 

 banner being absent. Then the stamens are declined below and ascending 

 at tip as is tjie style. Then they are in two sets. The inner set of four is 

 shorter by an anther's length than die outer, and the anthers arc about .> 

 mm. long and white, while the outer ones are 4 mm. long and red. The 



similarity does not extend to the pods. 



Hedeoma gracillima N. Sp. Apparently perennial from cteeping 

 rootstocks with stems mostly simple above the branching base and very 

 slender and a foot long and weakly erect. Whole plant glabrous except 

 the pctidcs are mostly retrorscly short-hairy, and the lej^ves and calyces 



have scattered rudiments of hairs. The mouth of the calyx within has • 



ring of white hairs. Leaves very thin, without evident resin dots, rhombic- 

 ovate, acutish at tip and cuneate at base, entire or with few scattered and 

 very low cerenatures, the blade 1.5 cm. long, with capillary petioles about 

 as long as blade, and longer than the capillary pedicels. Leaves but 

 slightly reduced above. Stems floriferous on the upper half or two-thirds. 

 Flowers mostly two to a node, the pedicels reflexed and flien abruptfy 

 arched upward and about 1 cm. long. Calyx 3 mm* long, triangular- 

 icuneate and not swollen in the middle nor conspicuously closed at tibroat, 

 the S ovate teeth about the same length and strongly 3-nerved and about 

 I mm. long. Corolla tube not exserted, the lobes broad and reflexed, pur- 

 ple. Stamens 4, a little exserted, the anther cells divaricate to alxmt 90 



degrees and elliptical and attached by a broad connective. The lower 

 stems are filiform and root at the nodes. No. 22849, San Bias, Sinaloa, 

 January 2», 1927, growing on bottcxn lands along with Salvia lanceolata 

 and other weeds. 



Russellfa. This genus as to Standley's Shrubs and Trees of Mexico 

 Is badly roixetl. The character of 4-6 angles is found on the same plant, 

 the young stems 4-angIed and the older and larger ones 6-angled. Some 

 plants, in fact all^ the plants I have seen, are pubescent between the ribs 

 such as polyedra, Jaliscensis, Deamii, sarmentosa. Most of the species 

 have temate leaves at least in part. Standley fails to state Aat all the 

 angles are raised into conspicuous rounded ribs, and the ribs arc warty 

 roughened when pubescent His key is worthless in determining the spe- 

 cies, and there seem to he at least twice as many species recognized as 

 exist. 



Pedicularis Tepicana N. Sp. lender and erect herbs 2-3 feet high, 

 branching above, and branches terminating m short spikes 2-3 inches long. 

 Leaves narrow, the middle ones at least t dm. long, completely bipinnate. 



and segments cuneate-oblsnceolate and rarely 1 cm. long, the terminal ones 



twice as long as th« lateral ones, all sharply apiculate with a callus tip, 

 and scabrous. Calyx a &ttft with tube 3 nam. long and equaling tibe 

 subulate-triangular lobes, w^i«fe: 3J5e; eiliale: <at tit atargms. Corolla about 



