Oreocarya worthingtonii Sivinski, 2023

Oreocarya worthingtonii Sivinski View in CoL , sp. nov. ( Figs. 1 View FIG , 3 View FIG , & 4). TYPE: U.S.A. NEW MEXICO: Otero Co.: mouth of Big Dog

Canyon near the north foot of Brokeoff Mountains, 32 km N of Texas border and 11.7 km W of Eddy County line,T23S R19E Sec

23 NE ¼ of SW¼, 15 Apr 1999 , R. C.Sivinski 4746 (HOLOTYPE: UNM 26389 About UNM ) .

Similar to Oreocarya oblata (M.E.Jones) J.F.Macbr. in pubescence,homostyly and globose,roughened fruits,but different from it in having linear or linear-oblanceolate, <2 mm wide cauline leaves on slender stems; terminal subcapitate inflorescence; and finely tuberculate nutlets.

Caespitose perennial from a branching caudex; stems slender, 1–2 mm wide mid-stem, 0.5–2.0 dm tall, spreading hispid and with finer, mostly retrorsely appressed hairs; basal leaves linear-oblanceolate, 2–7 cm long. 2–3(4) mm wide, strigulose on upper surface, pustulate-strigose on lower surface with a less dense, strigulose subcoat of finer hairs; cauline leaves linear to linear-oblanceolate, 1.0– 2.5 cm long, <2 mm wide, strigose, spreading hirsute on the margins; inflorescence a short, subcapitate thryse of 2–3 cymules terminating the stem, occasionally with a reduced cymule at the first or (rarely) the second nodes below the terminal cluster; bracts similar to cauline leaves; bracteoles evident;fruiting pedicles 1–2 mm; calyx accrescent,segments lanceolate, 5–7 mm long at anthesis, 7–9 mm long in fruit, hispid and spreading hirsute abaxially; corolla salverform, tube usually exceeding the sepal tips by 1–2 mm, rarely equal to the sepal tips, 6–9 mm long, distal 3–4 mm yellow, annulus of interior basal scales lacking; fornices yellow, papillose with minute, blunt hairs; corolla limb white, rotate, 5–8 mm in diameter; anthers 1.5–2.0 mm long, subsessile, attached just above the middle of the corolla tube; homostylous, styles 4–5 mm long, usually reaching the base of the staminal cluster, exceeding mature nutlets by 3.5–4.0 mm; fruit globose, usually maturing four nutlets, rarely fewer by abortion; nutlets ovoid, margins acute, in contact or narrowly separated, 2.0– 2.4 mm long, 1.9–2.3 mm wide, dorsally convex, bowed outward from the base then inward at the tip; dorsal surface finely tuberculate, ventral surface rugulose-papillose, 2-planed, attachment scar closed with a small basal pocket-like areole. Flowers from late March to mid-May.

Paratypes.— New Mexico: Eddy Co.: Guadalupe Mts. , ca. 4 air mi N of El Paso Gap, T25 S R21 E sec 7 NW¼ of SW¼, 8 Apr 2001, Worthington 30385 ( UNM!, UTEP). Otero Co.: Guadalupe Mountains , just W of Eddy County line on rim of large unnamed canyon N . of Sixshooter Canyon , T25 S R20 E sec 13 NW¼ of NE¼ 21 Apr 1992, Sivinski 1825 ( UNM); same location, 21 Apr 1998, R. C . Sivinski 4275 ( BRIT, SDSU, TEX); same location, 22 May 1998, Sivinski 4428 ( NMC); same location, 12 Apr 1999, Sivinski 4734 ( SRSC); Guadalupe Mountains ,south end of Martine Ridge in Upper Dog Canyon , 15.7 km N of Texas border and 2 km W of Eddy County line, T25 S R20 E Sec 11 NW¼ of SE¼, 7 Apr 1999, Sivinski 4706 (CalBG-RSA, RM, US); Guadalupe Mountains ,south end of Martine Ridge in Big Dog Canyon , 16 km N of Texas border and 3km W of Eddy County line, T25 S R20 E Sec 11 NW¼ of SW¼, 14 Apr 1999, Sivinski 4738 ( BRY-V); same location, 10 May 1999, Sivinski 4802 ( UTEP); Guadalupe Mountains , W side of Martine Ridge in Middle Dog Canyon , 13.3 km N of Texas bor- der and 2.8 km W of Eddy County line, T25 S R20 E sec 23 NW¼ of NW¼, 14 Apr 1999, Sivinski 4739 ( UNM); Brokeoff Mountains ,west side canyon of South Tank Canyon , 8 km N of Texas border and 9.6 km W of Eddy County line, T26 S R19 E Sec 1 SE¼ of NE ¼, 14 Apr 1999, Sivinski 4740 ( RM); Brokeoff Mountains ,ridge between Panther Canyon and South Tank Canyon , 11.2 km N of Texas border and 8.4 km W of Eddy County line, T25 S R20 E Sec 30 SE¼ of NE ¼, 15 Apr 1999, Sivinski 4744 ( UNM); Brokeoff Mountains , South Tank Canyon , 9.5 km N of Texas border and 8.4 km W of Eddy County line, T25 S R20 E Sec 31 NE ¼ of SE¼, 15 Apr 1999, Sivinski 4745 ( UNM); North foot of Brokeoff Mountains , 28.4 km N of Texas border and 14 km W of Eddy County line, T23 S R19 E Sec 33 SE¼ of SE¼, 15 Apr 1999, Sivinski 4747 (CalBG-RSA, SDSU); Brokeoff Mountains ,north end near stock tanks,slope facing Big Dog Canyon , T23 S, R25 E , Sec 25, NW ¼, 8Apr 2001, Worthington 30378 ( SAT, UNM!, UTEP) .