Chamaedorea homomalla H.Wendl. ex Dammer

Dowe, John Leslie & Hodel, Donald Robert, 2021, Taxonomy and nomenclature of four unresolved names published by Udo Dammer in the genus Chamaedorea (Arecaceae), Candollea 76 (1), pp. 93-98 : 97

Chamaedorea homomalla H.Wendl. ex Dammer in Gard. Chron. ser. 3, 38: 43. 1905, syn. nov.

Lectotypus (designated here): CoSTA RICA: Turrialba , 24.III.1857, H. Wendland 27 & 32 ( GOET [ GOET025302 ]!) . Syntypus: ibid. loco, H. Wendland 27 ( GOET [ GOET025301 ]!) .

= Chamaedorea warscewiczii H. Wendl. in Bonplandia 10: 37. 1862 ( Fig. 1C ). ≡ Nunnezharia warscewiczii (H. Wendl.) Kuntze , Revis. Gen. Pl. 2: 731. 1891.

Holotypus: [ CoSTA RICA or PANAMA]: cultivated in Herenhausen Gardens, Germany, s.d., H. Wendland s.n. ( GOET [ GOET025403 ]! ; iso-: K [ K000462925 ]!).

Notes. – DAMMER (1905) provided the following description: leaves pinnate, segments 5–7 per side, 2 to 4 times longer than broad, 25–50 cm long, 7–9 nerved.

The lectotype chosen here [GOET025302] consists of a single collection composed of two sheets. One sheet has three inflorescences that lack bracts, and with the remains of some flowers and calyxes. The second sheet contains a section of stem, a large number of detached pinnae, sections of naked rachis and a complete crownshaft. There are two labels in Wendland’s hand: one includes “ Morenia warscewiczii N. 27 & 32. Turialba. 24.3.57 ”, the other “ Ch. homomalla ”.

The remaining syntype [GOET025301] has a label in Wendland’s hand: “27. Ch. homomalla ”.

Chamaedorea warscewiczii ( Fig. 1C ), which occurs in Costa Rica and Panama, is a handsome species because of its leafy crown and broadly rhombic, sigmoid, conspicuously 5–9-nerved pinnae. The pistillate inflorescence, with its rachillae typically and uniformly curved in the same direction, is distinctive and diagnostic.

Figures

Fig. 1.– A. Chamaedorea tepejilote Liebm., moist montane forest, Suchitepequez,Guatemala; B. Chamaedorea elatior Mart., moist forest, Veracruz, Mexico; C. Chamaedorea warscewiczii H. Wendl., moist forest, Panama; D. Chamaedorea costaricana Oerst., moist forest, Costa Rica. [B: Hodel 949; C: Hodel 725; D: Hodel 693] [Photos: D.R. Hodel]