The achievement has opened a window on the Universe previously inaccessible at the telescope, thanks to an international team of engineers, including engineers from the National Radio Astronomy Observatory (NRAO). With it, they set a new record for the longest wavelengths visible with the radio array. New Receivers Achieve First Light, Set Record for Observational Capabilities at ALMA A new set of receivers installed on antennas at the Atacama Large Millimeter/submillimeter Array (ALMA) have achieved first light. Some species thrive in moist ground and others on dry sites, but most at least tolerate a wide range of habitat and readily spread into disturbed sites.“ tuberosus) may have scattered to dense glandular dots beneath. annuus) tend to have more opposite leaves as well as appearing quite different from plants grown under optimal conditions. Even defining (and thus measuring) a petiole can be puzzling, as it is usual for at least a narrow strip of green leaf tissue to border the petiole on each side, making it “winged.” We have considered the distal end of the petiole to be where the blade ± abruptly expands and the sides of the winged petiole are therefore no longer nearly parallel.In several species some of the upper leaves are usually or consistently alternate, perhaps 2 leaves or perhaps all but the lowermost 2 or 3 pairs. Some species or individuals with hairy stems may have them glabrous toward the base (or even merely harsh, from persistent bases of worn-off hairs, at the middle) and some with stems glabrous at the middle may have short, usually antrorse, hairs toward the summit and on branches of the inflorescence. It is usually best to judge stem pubescence at the middle of the stem. Experience with the genus will help to interpret such non-quantitative terms as “densely” pubescent or “nearly” glabrous stems. Many characters used in this genus (at least in the key) are difficult to apply in the absence of both options before the user.
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