Moraceae Gaudich. 1835
Creators: name: Bui, Van Huong
name: Vu, Dinh Duy
name: Pham, Mai Huong
name: Do, Van Hai
name: Doan, Hoang Son
name: Bui, Van Thanh
name: Dam, Ngoc Anh Luu
name: Truong, Ba Vuong
name: Gardner, Elliot M.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Rosales
Moraceae

description: Key to the genera of Moraceae in Vietnam
This key presented applies to the native and naturalized general of Vietnam and follows recent taxonomic revisions in Moraceae. Previously-accepted genera are given in brackets. For genera represented only by one species, the species name is given in parentheses.
1a. Plants woody ...................................................................................................................................................................................... 2
1b. Plants not woody ................................................................................................................................................................................ 3
2a. Plants herbaceous or subshrubs, without latex; inflorescences cymose or spicate; stamens 4 ............................. Fatoua (F. villosa)
2b. Plants herbaceous or succulent, within latex; inflorescences discoid to turbinate; stamens 2 or 3 (introduced)................................. .................................................................................................................................................................. Dorstenia (D. contrajerva)
3a. Inflorescences urceolate (figs) stigmas and anthers not exposed at anthesis; leaves usually trinerved at the base; lamina with waxy glandular spots at the base of the midrib or in the axils of the basal lateral veins beneath........................................................ Ficus
3b. Inflorescences not urceolate, stigmas and anthers exposed at anthesis; leaves seldom trinerved at the base; lamina usually without waxy glandular spots .......................................................................................................................................................................... 4
4a. Staminate inflorescence capitate with at least a rudimentary involucre; stipules lateral ................................................................... 5
4b. Inflorescences not involucrate; stipules lateral or fully amplexicaul ................................................................................................. 6
5a. Leaves distichous, involucral bracts imbrivate, pistillate flowers one per inflorescence, stamens straight or inflexed in bud ........... ............................................................................................................................................................................................................ 7
5b. Leaves spirally arranged; involucral bracts not imbricate; pistillate inflorescences multiflorous, with flowers embedded in the receptacle; stamens straight in bud................................................................................................................... Hullettia (H. dumosa)
6a. Inflorescences bisexual; staminate flowers numerous, surrounding 1-2 central pistillate flowers; (introduced) Brosimum (B. utile)
6b. Inflorescences unisexual..................................................................................................................................................................... 8
7a. Inflorescences always unisexual, pistillate inflorescences involucrate; staminate inflorescences discoid with a well-developed involucre; stamens straight in bud; with self-pruning branches....................................................................... Antiaris (A. toxicaria)
7b. Inflorescences sometimes bisexual, pistillate inflorescences not involucrate; staminate inflorescences capitate with a rudimentary involucre; stamens inflexed in bud; without self-pruning branches................................................ Streblus [Streblus sect. Streblus]
8a. Stamens one per flower, straight in bud; pistillate flowers at least partially connate ....................................................... Artocarpus
8b. Stamens 4‒5 per flower, inflexed in bud; pistillate flowers free, or if connate, the plants armed with spines ................................. 9
9a. Plants armed with curved or straight spines; staminate and pistillate inflorescences globose-capitate and multiflorous; tepals and bracts mostly with yellow dye accumulated in immersed glands ........................................................................................ Maclura
9b. Plants unarmed, or if armed, then with straights spines; staminate inflorescences not globose-capitate or pistillate inflorescences not multiflorous, tepals and bracts without yellow dye containing glands ..................................................................................... 10
10a. Plants climbers ................................................................................................................................................................................. 11
10b. Plants trees or shrubs ....................................................................................................................................................................... 12
11a. Plants deciduous; lamina chartaceous, leaf margin crenate to serrate-dentate; pistillate inflorescences globose................................ ................................................................................................................... Allaeanthus [Broussonetia sect. Allaeanthus] (A. kurzii)
11b. Plants evegreen; lamina subcoriaceous, leaf margin entire or denticulate towards the apex; pistillate inflorescences capitate but not globose.................................................................................................................... Malaisia [Trophis sect. Malaisia] (M. scandens)
12a. Staminate flowers 5-parted; leaf margin entire ..................................... Pseudostreblus [Streblus sect. Pseudostreblus] (P. indicus)
12b. Staminate flower 4-parted; leaf margin toothed at least toward the apex ........................................................................................ 13
13a. Leaves distichous, spirally arranged, or subopposite: shoot apices shed, just above the upper lateral, scaled resting-bud thorns always absent; pistillate inflorescences spicate or globose, multiflorous ........................................................................................ 14
13b. Leaves distichous; shoot apices persistent, thorns usually present, axillary or terminating short shoots; pistillate inflorescences uniflorous to racemose ........................................................................................................ Taxotrophis [Streblus sect. Taxotrophis]
14a. Leaves distichous; pistillate inflorescences spicate; tepals of the pistillate flowers free; stigmas 2 equal ............................... Morus
14b. Leaves spirally arranged or subopposite; pistillate inflorescences globose; tepals of the pistillate flowers connate; stigma 1, or if 2, then unequal ........................................................................................................................................... Broussonetia (B. papyrifera)
description: Published as part of Bui, Van Huong, Vu, Dinh Duy, Pham, Mai Huong, Do, Van Hai, Doan, Hoang Son, Bui, Van Thanh, Dam, Ngoc Anh Luu, Truong, Ba Vuong & Gardner, Elliot M., 2022, HULLETTIA King ex Hook. f. (Moraceae), A newly recorded genus to the Flora of Vietnam, with its lectotypification and a revised key to Vietnamese Moraceae, pp. 272-278 in Phytotaxa 550 (3) on pages 276-277, DOI: 10.11646/phytotaxa.550.3.7, http://zenodo.org/record/6651048