Yucca whipplei ssp.whipplei

Yucca whipplei Torrey ssp.whipplei

In Emory: U.S. and Mex. Bound. Bot. 222.1859.

Our-Lord's-Candle, chaparral yucca, quixote yucca

Synonymy

Yucca californica Groenland nom. inval. - Rev. Hort. (Paris): 434 (Aug. 16) 1858.
Yucca graminifolia Wood. - Acad. Nat. Sci. Phila. Proc. 1868:167.1868.
Yucca ortgesiana Roezl ex Ortgies. - Gartenflora. 20:1 10.1871.
Hesperoyucca whipplei Baker. - Kew Royal Bot. Gard. Bul. Misc. Inform. 5: 8.1892.
Yucca whipplei var. parishii Jones. - West. Bot. Contrib. 15: 59.1929.
Yucca whipplei ssp. typica Haines. - Madroño 41(6): 43.1941.
Yucca whipplei ssp. parishii (Jones) Haines. - Madroño 41(6): 44.1941.

Type: Type: San Pasqual, San Diego Co., Calif., SCHOTT, Torrey Herbarium, N.Y. Bot. Gard.

Other representative material studied.

California:

fh 1177, San Bernardino Co., 1,200 m;
fh 1178.18, Alpine, 600 m;
fh 1178.19, San Diego River, 450 m;
fh 1178.20, Cuyamaca Lake, 500 m;
fh 1178.21, San Diego, 400 m;
fh 1180.20, Pinon,
fh 1180.82, Oak Hill Road, 1,250 m;
fh 1180.89, 1,520 m; Phelan,
fh 1180.90, Angeles National Forest, 1,900 m;
fh 1180.91, Angeles National Forest, 2,300 m;
AM 99/2203, Crestline Region,
AM 99/3901, Pacillo Mts., 2,000 m.

Key to the Subspecies of Yucca whipplei

1.	Plants solitary, monocarpic. dying after fruiting					2
	Plants forming groups, not monocarpic					3
	2.	Spreading rosettes, in the juvenile stage the old, dry leaves are very persistent				ssp.whipplei
		Compact rosettes, in the juvenile stage the old, dry leaves persist for a short time, endemic				ssp.newberryi
		3.	New secondary rosettes formed from the hase of the moribund rosettes post flowering			4
			New rosettes not arising from dying rosettes			5
			4.	Leaves narrow and flexible		ssp.intermedia
				Broad, stiff sword-like leaves, endemic		ssp.eremica
				5.	Secondary rosettes from the leaf axils, several inflorescences produced during Spring, forming dense cushions of over 100 rosettes	ssp.caespitosa
					Secondary rosettes from rhizomes, one inflorescence produced during Spring, forming large, open scattered mats	*ssp.percursa*

SPECIES LIST "; ?>DISTRIBUTION MAP

Yucca whipplei, fh 1178.20, Cuyamaka Lake, CAL., 500m in bloom.

Yucca whipplei

Yucca whipplei, with inflorescence just forming between the leaves.