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Cassiinae pt 1 NY-Botanical_gardens_Vol. 35_1 - Copy.pdf - Antbase

Cassiinae pt 1 NY-Botanical_gardens_Vol. 35_1 - Copy.pdf - Antbase

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22 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN [VOL. <strong>35</strong><br />

vivo. Imperfect smaU flowers that open but fail to expand either corolla or an­<br />

droecium are known in both color-forms of C. swartzioides. A tree of var. scar­<br />

latina from near the type-locahty (Krukoff 9107, <strong>NY</strong>) had nothing but these depauperate<br />

flowers, whereas a collection of var. swartzioides (Schunke 30, <strong>NY</strong>)<br />

has a few such mixed in the same panicle of racemes with amply expanded<br />

flowers.<br />

Key to the Varieties of C. swartzioides<br />

1. Petals all orange or blood-red, or the vexillum sometimes yellow when first expanded,<br />

reddening in age; secondary cam<strong>pt</strong>odrome veins of distal lfts mostly 14-21 pairs; upper<br />

Amazonian Hylaea in Brazil, Peru, and extreme n.-e. Bolivia. 4a. var. scarlatina (p. 22).<br />

1. Petals white exce<strong>pt</strong> for the rose- or red-tinged vexillum; secondary veins of distal lfts mostly<br />

10-15 pairs; Loreto, Peru. 4b. var. swartzioides (p. 22).<br />

4a. Cassia swartzioides Ducke var. scarlatina (Ducke) Irwin & Barneby, stat. nov.<br />

C. scarlatina Ducke, BuU. Mus. Paris II, 4: 730. 1832 (oct) & Archiv.<br />

Jard. Bot. Rio de Jan. 6: 25, 1933 (jan).—"Habitat prope Sao Paulo<br />

de Ohvenga (Rio Sohmoes, civitate Amazonas) silva non inundabiH,<br />

leg. A. Ducke 20-8-1929 (H[erb.] J[ard.] B[ot.] R[io de Janeiro] n.<br />

23.307) . . .'—Holotypus, RB; isotypi, K = IPA Neg. 1173, MO, <strong>NY</strong>,<br />

P!<br />

Cassia scarlatina sensu Ducke, 1939, p. 80; Macbride, 1943, p. 181, ex parte, exclus. Schunke<br />

30.<br />

Fls colored as given in key.—Collections: 9.—Fig. 3.<br />

Forest margins and riverbanks above flood-line, 120-600 m, scattered along the<br />

upper Amazon and its right tributaries between 55-77°W and 3-11°S, from Loreto<br />

(Alto Amazonas), Peru and w. Amazonas, Brazil, s. to the Madeira-Mamore<br />

basin in Rondonia, Brazil and adjacent Pando, Bolivia.—Fl. VII-XI(-I).<br />

Readily distinguished at anthesis from all Amazonian cassias exce<strong>pt</strong> C. rubriflora<br />

by the vermilion flowers, and from the latter by the few large leaflets,<br />

agreeable perfume, and pandurate vexillum.<br />

4b. Cassia swartzioides Ducke var. swartzioides. C. swartzioides Ducke, 1030,<br />

I.e., sens. str.—"Habitat silva non inundabiU prope Iquitos Pemviae<br />

orientahs, 27-10-1928, legit A. Ducke, H[erb.] J[ard.] B[ot.] R[io de<br />

Janeiro] n. 20.330."—Holotypus, RB; isotypi, K = IPA Neg. 1176, P!<br />

Cassia swartzioides sensu Macbride, 1943, p. 183.<br />

Flowers colored as given in key.—CoUections: 5.<br />

Habitats of var. scarlatina, below 250 m, known only from the upper Amazon<br />

near and above the mouth of Rio Napo (Iquitos, rios Momon, Mazan) in Loreto<br />

(Maynas), Peru.—Fl. X-II.—Machetebaina.<br />

Perhaps referable to C. swartzioides sens. lat. is C. rhonhofiana Harms (No­<br />

tizbl. Bot. Gart. Beriin 15(1): 46. 1940), described from a specimen (apparently<br />

not duphcated) from Amazonian Ecuador (Schultze-Rhonhof3008, fB). The protologue<br />

agrees with C. swartzioides, from which it was supposed to differ only<br />

in longer (6, not 2-3 mm) bracts, in most respects, but no menrion was made of<br />

any appendage to the claw of the vexUlum, and the flowers were noted in the<br />

field as light pink fading pale yellow. New material from the Pastaza vaUey near<br />

Mera is required.

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