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MEMOIRS OF THE NEW YORK BOTANICAL GARDEN [Vol. 8, No. 4 



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Litanie, Feti Creek, Aug. 1939, Geyskes 101 (U); Coppename R., bover Fonchensvallen, 

 Oct. 1943, Geyskes 978 (U); prope Republiek, Jan. 1911, Gonggrypp 78 (U); prope Repub- 

 liek, Aug. 1910, Gonggrypp s.n. (U); fluv. Couropina, prope Republiek, Aug. 1911, Gong- 

 grypp s.n. (U); Herb. Surinam 6410 (U); prope Republiek, Oct. 1911, Kuyper 63 (U); near 

 Posoegronoe, Saramacca R., June 1944, Maguire 24016 (F, MO, NY, U, US); Toekoemoetoe 

 Creek, Saramacca R., Oct. 1944, Maguire 24910 (F, MO, NY, U, US); Litanie R., Aug. 

 1937, Rombouts 723 (IAN, U); Splitgerber 81 (P); Litanie, Aug. 1939, Stahel 101 (NY); 

 Akwansa, Nickerie, Sept. 1916, Stahel & Gonggrypp 3539 (U, US); Zanderij I, July 1915, 

 Sur. For. Bur. 761 (U); Zanderij I, Nov. 1915, Sur. For. Bur. 1383 (U); Zanderij I, Jan. 

 1916, Sur. For. Bur. 1565 (U); Watramiri, May 1916, Sur. For. Bur. 1914 (U); Zanderij I, 

 Aug. 1918, Sur. For. Bur. 3924 (MO, U); Zanderij I, Nov. 1918, Sur. For. Bur. 4074 (U); 

 Zanderij I, Sept. 1920, Sur. For. Bur. 4769 (U); Zanderij I, Sur. For. Bur. 6410 (U); Zan- 

 derij I, Aug. 1924, Sur. For. Bur. 6472 (MO, U); Zanderij I, May 1944, Sur. Woodherb. 202 

 (IAN, NY, U, Y); fluv. Pikien, Aug. 1900, Tresling 260 (U); Surinam, Weigelt s.n.; Wull- 

 schlagel 819 (W); Rio Para, Sept. 1853, Wullschlagel 1435, 1436, 1437 (W). 

 FRENCH GUIANA: Guyane, 1821, Perrottet s.n. (P). 



Vernacular Names: Brazil: "arapary", "ipe". Peru: "machinmango", "soli- 

 man". Surinam: "sarabebe "watrabirihoedoe", "witte walaba". 



There is in this species a very considerable degree of variability but it ap- 

 pears to have no taxonomic significance and certainly no discernible pattern. This 

 situation is rather characteristic of many of the commonly collected, widespread 

 species in the genus. Within these species geographic races may have already 

 arisen but their divergence at this time is insufficient for their taxonomic recognition. 



The relationship of this species is surely with M. bifolium, with which it has 

 frequently been confused in the past. They are readily separable on the following 

 characters of M. an gusti folium: (1) ovary pilosulose only on the margins*; (2) much 

 larger bracts of different shape; (3) bracts and bracteoles pubescent on the inner 

 surface; (4) costa of leaflets strongly salient on the upper surface. 



The replacement of the familiar name of this species by one which is either 

 unknown or poorly known to others may distress those who maintain the sanctity 

 of the well-established epithet. However, the modification is entirely in line with 

 the spirit and letter of the International Code which provides that the earliest epi- 

 thet shall be the correct one. It has been found that the correct date on Miquel's 

 Stirpes surinamensis selectae is really 1851 rather than 1850 as has most fre- 

 quently been cited. Apparently, the author completed the manuscript in 1850; the 

 introduction is dated January 1850, and his title page bears that date. However, 

 the seventh volume of the second series of the journal cited, which is entirely oc- 

 cupied by Miquel's paper, bears the date 1851. J. K. Hasskarl reviewed the work 

 in Flora (34: 190. 28 March 1851.) and he stated there that the publication was re- 

 ceived "this week" ("...eines in dieser woche. . .herausgegebenen Bandes"). 

 This evidence would then establish that the publication in question was published 

 in 18S1 during the week of March 28th or possibly somewhat earlier in the year. 

 Consequently, the next available epithet is Bentham's Vouapa angustifolia. 



30. Macrolobium retusum Huber, Bol. Mus. Goeldi 7: 290. 1913- 



Tall shrub with glabrous leaves and branchlets. Petioles 5-8 mm. long, shal- 

 Iowly canaliculate. Leaflets 8.5-10.5 cm. long, 5-6.5 cm. wide, obovate-oval, the 

 base inequilateral, the upper side obtuse, the lower acute, the apex rotund, deeply 

 emarginate; costa salient oh both sides, the venules closely parallel, prominu- 

 lous, an intramarginal nerve traversing the length of each margin. Inflorescences 

 4 cm. long, the axis puberulous; bracts minute, caducous; pedicels about 1 mm. 

 long, puberulous; bracteoles 7.5 mm. long, 3-3.5 mm. wide, oval-oblong, abruptly 

 caudate-acuminate, sparingly strigulose within, puberulous externally. Hypanthium 

 1.5 mm. long, sessile, glabrous. Sepals five, free, the adaxial pair 1 mm. long, 

 0.5 mm. wide, triangular, acuminate, ciliolate apically, the other sepals 2.5—3 mm. 

 long, 1-1.5 mm. wide, lanceolate, acuminate, ciliolate apically. Petal blade 3 mm. 



