312 



old-gold l>elow," witli sevoriil small lateral crests; dorsjil wiiii;- 12 lo 15 lines 

 long. Only a single jilant seen near tho liaso of tbe mountains. Alan/aniilo, 

 Decemher I to 81, 1890. No. I0l'.">. 



TheHB R]n>einH>nw ant only in i'ruit. 



The llowiir charactcr.s of //. pordlluiui, a closely related wperies. are here added: 

 seiialsf), 1^ lines long, oljtn.se; glands 8: ]ietals T), 2.1 lines long including tlio 

 short elaw; blade oldong witli truncate or sagittate hase. with a thi<'k inidrih, 



Hourgeau's No. 8112, referred to //. ijuiiaixi in liiol. Ceiit.-Amer., seems to he- 

 //. hct'clijjdita. 

 Hiraea mexicaiia Kose, sj), now Shrub with slender hanging branches, sometimes 

 trailing over bushes: young brauchos lauate-pubeseeiit, becoming glabratewith 

 age: leaves ojiposite, oblong to oval, obtuse or aer.tish with rounded or stuiie- 

 what tapering liase, scuuewbat pubescent beneath ^lanate or soft-silivy wbeu 

 young), glabrous above (a little pubescent when young), '2k to H\. inches long, 

 1 to 1-| inches broad; jictiohs puboseent, 8 to 8 lines long, with 2 glauds iieai- the 

 mi(blle: dowers in 8-to (J-llowered nmbols or corymbs: ])edunch's slender : ]>ed- 

 ii-els to !t iiiHis long, pubescent: calyx with 8 large glands: petals yellow, t 

 or 5 lines in diameter, denticulate, witli n claw 1 line long: stamens 10, slmrt, 

 nearly cijual ; the filanu'uts unequally connate above the middle ; anthers obtuse : 

 styhvsB: samar.c ])ulicsccnt. with 8 wiugs, these e(|ual or nearly so (central one 

 sometimes more prominent), l.J inches broad, 2 to of inches long.— Armeria, Feb- 

 ru;iry 15, 181)1. No. 1275. 



For illustration see I'l. xxx. 



In foliage and (lowers this s])eci(^s is nearest //. (jmiyii, but it has much larger 

 fruit, aud is apparently distinct. 



ZYGOPHYLLACEJE. 



Tribulus grandiflorus (Torr.) Bonth. & Hook. Gen. Plant, 1.264(1802) ; Kalhirwrnla 

 graiidijiora Torr. in (iray, PI. Wright, i. 28 (1852). Plant procumbent. Found in 

 rich bottoms. Agiabampo, October 8 to 15, 1891. No. 783. Also on grassy 

 plains, though not common, ('idima, .January 9 to Februju-y 15, 1891. No. 1110. 



Tribulus maximus L. 8p. PI. i. 886 (1753). Agiabampo, Oct()ber 8 to 15, 1890. No. 

 786. 



GERANIACEiE. 



Oxalis berlandieri Torr. Mex. Bound. Siirv. 11(1859). Only a few jdants found 

 along a mountain trail. Manzanillo. December 1 to 31, 1890. No. 1008. 



The finding of this rare Texan plant in central Mexico is interesting and it should 

 be looked for fiirtber north. Tbis sjiecies bad not heen c(dlected since tbe Mexi- 

 can Boundary Survey was published, until Frinylc and Nealley got it in 1890. 



RUTACE.S:. 



Monuieria trifolia L. Sp. PI. ed. 2. ii. 98(5 (1763). In wet ])lace8 along the bay, 

 ojiposite the village. Manzanillo, December 1 to 81, 1891. No. 927. 



This genus is not<'redited to Mexico liy Mr. Hemsley in Biol. Centr.-Amer., nor 

 do I tind it re])orted anywhere from Mexi<'o. The range of this sjiecies is given 

 as Brazil and (luiana. It is not re]»reseuted in the National Herbarium, but 

 through the kindness of ])r. liobinson I have examined the three sheets from 

 the (iray Herbarium. 



My specimens have broader leatlets and the terminal one has a narrow cuneate 

 base, the peduncles huiger, and the two larger sejtals broader, and the i>e]]ucid 

 dots are not so conspii'uons. Future study may show Ibat this form ccinstitutes 

 a good variety. 



