28 DAVENPORT ACADEMY OF NATURAL SCIENCES. 



thickish, narrowly spathulate, one-fourth to one-half inch in length; 

 involucre broadly bilobed, and conspicuously inflated on each side, 

 hyaline with deep red reticulations; staminate flowers axillary, on a 

 more or less prolonged axis, without bracts, except an irregular ciliate 

 tuft at the base of the pedicels; perianth short-campanulate, deeply 

 6-cleft, segments nearly equal ; stamens 9, in two rows, at the base, 

 with occasional traces of undeveloped ovaries; pistillate flowers shorter, 

 persistent, and adhering to the developed akenes, 6-parted, with two 

 rows of pedicellate staminodes at the base; akene and embryo as 

 above noted. 



Habitat. — Lower California, from San Quentin to Magdalena Bay, 

 flowering early in the season ; staminate plants more diffuse, with 

 shorter joints and less prolonged branches. Mr. Orcutt's specimens, 

 No. 1374, April 17th. 1886, from SanTelmo, show all the peculiar char- 

 acters of this species. 



2. H. FRUTICOSA, Greene, ined. — Pterostegia fruticosa, Greene, I.e. 

 (Copied from Mr. Greene's original description, Bull. Cal. Acad., IV., 

 pp. 212, 2 1 3. j 



"Shrubby, diffusely branched, firmly erect, 2-4 feet high, densely 

 leafy; branchlets short-jointed, tomentulose at the joints; leaves gla- 

 brate, fleshy, obovate-spathulate, entire obtuse or retuse, 2-5 lines 

 long; involucre firm-hyaline, reddish, with darker reticulate veins, 5-7 

 lines long, deeply cleft into two entire reniform lobes; wings reniform, 

 entire unequal; akene ovate, lanceolate two lines long, sharply hi- 

 quetrous; perianth a half line long, persistent." 



Habitat. — Cedros Island: Dr. Veatch, 1859; E. L. Greene, May, 

 1885. Not feeling at liberty to modify Mr. Greene's original specific 

 description in referring it to his proposed new genus, it is only neces- 

 sary to add that, in the absence of staminate flowers, it can only be 

 provisionally attached to this genus by its close similarity to the pre- 

 ceding species till confirmed by complete specimens. 



