AFRO-INDIAN REGIONS. 



429 



sometimes exclusively, in the midst of those of the Heteropogon, on the Leeward por- 

 tion of the G-roup. 



(No. 2) ; but pointed glumes. Panicle dense, elongate ; spikelets 6-8-flowered. 



In the environs of the Great Crater. 

 ? (No. 3); apparently distinct; smaller, and the leaves narrower. "District of 



Puna," Brackenridge. 



(Sporobolus, No. 1) ; compare S. Virginicus. Filling the natural salt-marsh that occu- 

 pies a portion of the low isthmus on Maui. 



(Lepturus ?, No. 3) ; pointed glumes. Abounding on Oahu ; and in the environs of Hilo, 

 as far as the elevation of a thousand feet. 



Andi'opogon (No. 3); the spikes often geminate. "Puna," Brackenridge; and between 

 Hilo and the Great Crater, at the elevation of from 2000 to 3000 feet; frequent. 



Heteropogon (compare No. 1 Feejee Islands). Abundant; exclusively occupying exten- 

 sive tracts throughout the Leeward portion of the Group. 



Psilotum (bis No. 1 Paumotuan coral-islands to the Feejeean Group). On trunks of trees, 

 and sometimes on the ground ; in the environs of the Great Crater ; and as far as 

 the elevation of 7000 feet on Mauna Kea. — Apparently the same species, the stems 

 somewhat wider, on the mountains behind Honolulu. 



Lycopodium ; bis (No. 4) Taheiti (to the Feejee Islands). Habit of L. clavatum ; spikes 

 solitary. Pahuhali, and elsewhere ; frequent. 



nov. sp., (No. 11). Habit of L. pendulum and L. clavatum ; stems slender, many 



times branched ; scales narrow, subulate; spikes solitary, or sometimes in pairs. Form- 

 ing large matted tufts on the branches of trees on the mountains behind Honolulu, 

 and in the forest on Mauna Kea, as far as the elevation of 3000 feet ; but somewhat 

 rare. 



nov. sp., (No. 12). Pendulous from the trunks and branches of trees; leaves 



lanceolate ; spikes branching, cylindrical. " District of Puna," Brackenridge. 



(No. 13). Habit of L. lucidulum; fruit axillary. In the forest on Mauna Kea. 



nov. sp., (No. 14) ; like L. lucidulum. Leaves reflexed, serrulate, attenuate at 



base. On the mountains behind Honolulu, at the elevation of 2200 feet. 

 (Selaginella, No. 3); like L. hypnoides. Upright; densely branched at summit. In the 



environs of the Great Crater. 

 ( No. 4). Hypnoid; not naked at base, nor so upright as the last. Around a 



cave at the Falls near Hilo, C. P. 

 ( ? No. 5; recorded as) Lycopodium nov. sp. Rambling on trunks of trees; four 



inches, upright, branching; lower leaves small, floral leaves enlarged and beautifully 



ciliate with distant setae ; fruit axillary term. On the mountains behind Honolulu, at 



the elevation of 2200 feet. 

 Trichomanes (No. 13) ; a thick woolly rhizoma. " Frequent between Puna and the Great 



Crater," Brackenridge. 

 (No. 14). Two to three inches high; a slender rhizoma. "Trunks of trees in 



the District of Puna," Brackenridge. 

 (No. 15); the largest species. Creeping; the fronds one to two feet high. In 



the mountain-defile across West Maui. 

 (No. 16). Half an inch high; flabellate. " Waialua, at the Western end of 



Oahu," Rich and Brackenridge; and on rocks, at the Northern base of Mauna Kea. 



108 



I 



